Search results for: hydraulics - Bridge of Knowledge

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Search results for: hydraulics

Search results for: hydraulics

  • Judicial udefulness of hydraulics

    Publication

    - Year 2009

    Przedstawiono znaczenie hydrauliki do rozwiązywania zagadnień nietypowych, wykraczających poza standardowe kwestie inżynierskie. Jako zasadnicze pole takich zastosowań wskazano spory, rozstrzygane przez organa sprawiewdliwości (sądy, prokuraturę). Podano przykłady konkretnych problemów.

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  • Twenty five years of the School of Hydraulics

    Publication

    - Year 2005

    Podsumowano dorobek naukowy 25 lat Ogólnopolskiej Szkoły Hydrauliki. Przedstawiono historię szkoły, tematykę naukową, wycieczki studialne i inne formy aktywności. Przypomniano również rozwój karier naukowych uczestników Szkół.

  • Numerical modeling in open channel hydraulics / R. Szymkiewicz

    Publication
    • M. Naczk

    - Year 2010

    książka poświęcona jest zagadnieniom modelowania matematycznego przepływów w kanałach otwartych.oprócz wyprowadzenia podstawowych równań przepływów oraz transportu masy i energii, w książce omówiono metody numeryczne użyteczne w hydraulice kanałów.przedstawiono liczne przykłady ich aplikacji do rozwiązania równań przepływu ustalonego i nieustalonego. opisowi metod rozwiązania towarzyszą analizy dokładności oraz stabilności numerycznej.

  • Robust Estimation of Integrated Hydraulics and Parameters in Water Distribution Systems

    Publication
    • M. Brdys
    • K. Duzinkiewicz
    • M. Grochowski
    • T. Rutkowski
    • M. Grochowski

    - Year 2001

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  • DIGITAL HYDRAULICS CIRCUIT BASED ON PWM FUNCTION FOR CONTROLLING HYDRAULIC ACTUATOR POSITION

    Publication

    - Year 2022

    Hydraulic systems are used in many different industries, such as multi-source hydrostatic drive systems. In traditional hydraulic systems, a proportional servo valve is used to control the position of hydraulic actuators. The low energy efficiency and high cost of these control valves are two major problems with these systems. Digital hydraulics is one of the most unique ideas on how to solve these problems. Researchers like digital...

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  • Direct algorithm for optimizing robust MPC of drinking water distribution systems hydraulics

    Publication

    Model-based predictive control is an effective method for control the large scale systems [1]–[6], [8], [16], [17]. Method is based on on-line solution of the control task over the control horizon using current and past measurements, as well as the system model. Only a first element of calculated control sequence is applied to the plant. At the next sampling instant, based on new process output measurements, control procedure is...

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  • Research and development in Department of Hydraulics and Pneumatics of the Faculty of Mechanical Engineering of Gdańsk University of Technology

    W artykule przedstawiono aktualny stan prac badawczych prowadzonych w Katedrze Hydrauliki i Pneumatyki PG:- rozwój laboratorium badawczego,- prace nad nowym typem pomp wielotłoczkowych z rozrządem krzywkowym,- prace nad silnikami satelitowymi z kompensacją luzów osiowych,- stanowisko do badań silników zasilanych emulsją wodno-olejową,- badania zachowania układów hydraulicznych w niskiej temperaturze otoczenia.

  • Hydraulics and Pneumatics

    e-Learning Courses
    • L. Osiecki

    The lecture covers the theoretical basics of hydraulic and pneumatic drive, simple systems encountered in practice and the elements included in these systems. Examples of applications of both types of drive in mechanical engineering are also presented, as well as their advantages and disadvantages compared to other types of drive.

  • Hydraulics and Pneumatics

    e-Learning Courses
    • S. Głuch
    • J. Głuch

    Zapoznanie ze zjawiskami fizycznymi, podstawami projektowania i eksploatacji hydraulicznych i pneumatycznych układów napędu i sterowania   Acquainting with physical phenomena, the basics of design and operation of hydraulic and pneumatic drive and control systems

  • Hydraulics and hydrology

    e-Learning Courses
    • T. Kolerski
    • A. M. Mustafa

    For the purpose of this course we are interested in the engineering aspect of hydrology, or what might call engineering hydrology. From this point of view we are mainly concerned with quantifying amounts of water at various locations as function of time for surface water applications. Solving engineering problems using hydrologic principles.

  • Hydraulics and hydrology 2022

    e-Learning Courses
    • T. Kolerski
    • P. Radan
    • A. M. Mustafa

    For the purpose of this course we are interested in the engineering aspect of hydrology, or what might call engineering hydrology. From this point of view we are mainly concerned with quantifying amounts of water at various locations as function of time for surface water applications. Solving engineering problems using hydrologic principles.

  • Hydraulics and Hydrology 2024

    e-Learning Courses
    • T. Kolerski
    • P. Radan

  • Fluid Mechanics and Hydraulics EE Msc sem. I r.a. 22/23

    e-Learning Courses
    • P. Zima
    • A. M. Mustafa

    Basic definitions. Physical properties of liquids. Forces acting on fluids. Hydrostatics - basic equations. Pressure on a flat and curved wall. Buoyancy. Archimedes' law. Balance of submerged bodies. The balance of floating bodies. Hydrodynamics. Hydrodynamic quantities. Continuity equation for the liquid stream. Bernoulli equation. Basic laws of hydrodynamics. Equation of mass behavior, preservation of the amount of motion, Bernoulli's...

  • Fluid Mechanics and Hydraulics EE Msc sem. I r.a. 23/24

    e-Learning Courses
    • P. Zima

    Basic definitions. Physical properties of liquids. Forces acting on fluids. Hydrostatics - basic equations. Pressure on a flat and curved wall. Buoyancy. Archimedes' law. Balance of submerged bodies. The balance of floating bodies. Hydrodynamics. Hydrodynamic quantities. Continuity equation for the liquid stream. Bernoulli equation. Basic laws of hydrodynamics. Equation of mass behavior, preservation of the amount of motion, Bernoulli's...

  • Hydraulics and Pneumatics, L, DE, sem. 05, zimowy 22/23 (M:32016W0)

    e-Learning Courses
    • M. Bąk

  • Paweł Śliwiński dr hab. inż.

    Diplomas and academic degrees. Training 2017:   degree of habilitated doctor;2006:   PhD in Technical Sciences. PhD thesis defended with distinction. Gdansk University of Technology, Faculty of Mechanical Engineering.2000:   Master of Science. Graduated from the university with distinction. Gdansk University of Technology, Faculty of Mechanical Engineering.1995:   Mechanical technician. Graduated from a Technical Secondary School...

  • Natalia Krystyna Gietka dr inż.

    Since 2014, an employee of the Faculty of Civil and Environmental Engineering at the Gdańsk University of Technology. Currently an assistant professor at the Department of Geotechnics and Water Engineering, where she develops her scientific interests related to the field of hydraulics, fluid mechanics, meteorology and hydrology. Together with the Center for Innovative Education, it strives to introduce innovative solutions in teaching,...

  • R&D of satellite pumps and motors with small geometrical displacement supplied with oil and non-flammable liquids

    Publication

    - Year 2012

    The newest construction of satellite motors and self-suction satellite pumps with small geometrical displacement have been described in this article. The characteristics of volumetric and total efficiency of one satellite motor, selected from the series, supplied with oil have been presented. These characteristics have been compared with the orbital motors' characteristics. The remaining specifications of these motors were also...

  • New satellite pumps

    Publication

    - Year 2012

    Stosowanie Maszyn company from Katowice was initiator and originator of newest original high pressure satellite pumps series of types PSM. Construction solution, research and development of these pumps have been conducted by Team of Hydraulics and Pneumatics of Gdansk University of Technology in cooperation with this company within the confines of research project nr R0300103 (source of funds: Ministry of Science and Higher Education)....

  • Design of a test bench for determining the general characteristics of an internal combustion engine using a hydraulic power take-off system

    Publication

    The paper presents a design of an engine test bench, which is used to determine the general characteristics of a truck engine using a power take-off (PTO). PTO drives a hydraulic system that generates a load on the engine at various points in its operation in the power range specified by the hydraulic system. The design allows for stationary and mobile tests with the test bench mounted on the truck, without any modification of...

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  • Compensation of pressure peaks in pwk-type hydraulic pumps

    Publication

    - Key Engineering Materials - Year 2012

    hydraulic axial pumps equipped with cam-driven commutation unit (pwk pumps) proved their high efficiency up to 55 mpa and ability to work self-sucking, even at high speed. displacement of pwk pump may easily be changed by moving its control cam. full discharge from hydrostatic forces makes such control possible by direct action of a low-energy actuator like proportional electromagnet or stepping motor. that eliminates heavy and...

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  • Volumetric and torque efficiency of pumps during start-up in low ambient temperatures

    Publication

    - Year 2021

    The volumetric, torque and total efficiency of hydraulic pumps change during start-up in low ambient temperatures, as well as in thermal shock conditions, un-til they reach the set conditions. The time to reach steady-state conditions de-pends on many parameters: ambient temperature, flow rate, fluid temperature, design of hydraulic units. The author carried out tests of hydraulic pumps in the Hydraulics Laboratory of the Faculty...

  • Balance errors generated by numerical diffusion in the solution of non-linear open channel flow equations

    Publication

    The paper concerns the untypical aspect of application of the dissipative numerical methods to solve nonlinear hyperbolic partial differential equations used in open channel hydraulics. It is shown that in some cases the numerical diffusion generated by the applied method of solution produces not only inaccurate solution but as well as a balance error. This error may occur even for an equation written in the conservative form not...

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  • Prace rozwojowe nad pierwszą polską ładowarką teleskopową

    Publication

    - Napędy i Sterowanie - Year 2018

    W artykule dokonano przeglądu prac wykonanych przez członków Zespołu Hydrauliki i Pneumatyki Wydziału Mechanicznego Politechniki Gdańskiej w ramach programu „Bon na innowacje” dla firmy „Hydro-Metal Adam Gordziejczyk”. Obiektem prac była ładowarka teleskopowa z napędem hydraulicznym o udźwigu 1,5 T. Pierwsza część prac polegała na obliczeniach MES i poprawie sztywności konstrukcji ramy i wysięg­nika. Druga część prac polegała na...

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  • Projekt stanowiska badawczego do wyznaczania charakterystyki ogólnej silnika spalinowego ZS przy wykorzystaniu hydraulicznego układu odbioru mocy

    Przedstawiono projekt stanowiska badawczego służącego do wyznaczania charakterystyki ogólnej silnika pojazdu ciężarowego, wykorzystując przystawkę odbioru mocy do napędu układu hydraulicznego generującego obciążenie silnika w różnych punktach jego pracy. Przedstawiono założenia projektowe oraz ograniczenia konstrukcyjne. Omówiono zasadę działania stanowiska i metodę wyznaczania charakterystyki. Opisano układ hydrauliczny oraz układ...

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  • Influence of the low ambient temperature on the start-up process of hydraulic pumps

    Publication

    - Year 2019

    Starting hydraulic pumps in low ambient temperatures may cause: decreased hydraulic-mechanical efficiency, larger vibration of hydraulic installation, faster wear and more frequent damage to the elements of pumps, change of material properties of elements, increase of pressure drop. As a result of pressure drop in the suction pipe, large underpressure may be experienced, causing incomplete filling of pump working chambers with...

  • A new method and equipment for the detection of presence and estimation of the content of the petroleum-based fraction in lubricating oils, especially those emitted to the atmosphere

    Lubricating oil, used in cutting equipment, works in the so-called open lubrication system and is entirely emitted to the environment. When such an oil contains even a small portion of the crude oil-derived fraction, which is still very common, the oil is a serious environmental pollution. In addition, the oil mist poses a serious threat to the health of employees. Current legal regulations require users of saws and harvesters...

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  • New generation of the satellite hydraulic pumps

    Hydraulic satellite machines are known and produced in many versions, recognizable by the number of humps on their inner rotor and external gear, and therefore by the number of cooperating gears (satellites). All known shapes were however designed on the base of preliminary assumption that rotor’s and external gear’s pitch lines are formed by merging arcs, tangent to each other in the. This assumption makes calculations easier,...

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  • Wieloobszarowa rozmyta regulacja PID mocy reaktora jądrowego

    W artykule przedstawiono wieloobszarowy regulator rozmyty z lokalnymi regulatorami PID dla sterowania mocą reaktora jądrowego typu PWR. Wykorzystano model matematyczny o parametrach skupionych reaktora PWR obejmujący procesy generacji i wymiany ciepła oraz efektów reaktywnościowych. Nastawy lokalnych regulatorów PID zostały dobrane w sposób optymalny, minimalizując całkowy wskaźnik jakości ISE. Na przykładzie pokazano że zastosowane...

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  • RESEARCH OF HYDRAULIC PISTON PUMPS’ START-UP IN LOW AMBIENT TEMPERATURES

    Publication

    - Year 2017

    Starting hydraulic pumps in low ambient temperatures may cause: decreased hydraulic-mechanical efficiency, larger vibration of hydraulic installation, faster wear and more frequent damage to the elements of pumps, change of material properties of elements, increase of pressure drop. As a result of increase of resistance of cold oil flow in the suction pipe, large underpressure may be experienced, causing incomplete filling of pump...

  • Analiza porównawcza procesów tłumienia i wygładzania fali ciśnienia w trakcie nieustalonego przepływu w rurociągach wykonanych z różnych materiałów.

    Uderzenie hydrauliczne jest uważane za jeden z najważniejszych problemów nieustalonego przepływu w przewodach, dlatego nadal stanowi obiekt badań wielu naukowców. To zagadnienie może być badane na dwóch poziomach: praktycznym i teoretycznym. W artykule zaprezentowane zostały wyniki badań doświadczalnych przeprowadzonych na stanowisku pomiarowym nieustalonego przepływu, funkcjonującym w Laboratorium Hydraulicznym Wydziału Inżynierii...

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  • Funkcjonowanie zespołów napędu hydraulicznego maszyn w niskich temperaturach otoczenia

    Publication

    - Year 2018

    W pracy przedstawiono cztery warianty klasyfikacji rozruchów oziębionego napędu hydraulicznego. Pierwsza sytuacja dotyczy zagadnienia, w którym wszystkie zespoły układu napędowego wraz z olejem mają taką samą niską temperaturę podczas rozruchu. Pozostałe warianty odnoszą się do rozruchu w warunkach szoku termicznego wywołanych zasilaniem ciepłym czynnikiem roboczym oziębionych zespołów hydraulicznych. Rozruch zespołów...

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  • Hydro and marine civil engineering (2023-2024)

    e-Learning Courses
    • W. Sterpejkowicz-Wersocki
    • A. M. Mustafa
    • W. Magda

    Kurs realizowany na Wydziale Inżynierii Lądowej i Środowiska  (WILiŚ) Politechniki Gdańskiej. Studia:   II stopnia - magisterskie, stacjonarne Kierunek: Budownictwo Semestr:  1 (letni) Presentation of basic hydro and marine civil engineering structures together with basic computational procedures for determining environmental forces acting on a structure (vertical-wall breakwater, rubble mound breakwater, submarine pipelines...

  • Hydro and marine civil engineering (2020-2021)

    e-Learning Courses
    • W. Sterpejkowicz-Wersocki
    • A. M. Mustafa
    • W. Magda

    Kurs realizowany na Wydziale Inżynierii Lądowej i Środowiska  (WILiŚ) Politechniki Gdańskiej. Studia:   II stopnia - magisterskie, stacjonarne Kierunek: Budownictwo Semestr:  1 (letni) Presentation of basic hydro and marine civil engineering structures together with basic computational procedures for determining environmental forces acting on a structure (vertical-wall breakwater, rubble mound breakwater, submarine pipelines...

  • Hydro and marine civil engineering (2021-2022)

    e-Learning Courses
    • W. Sterpejkowicz-Wersocki
    • A. M. Mustafa
    • W. Magda

    Kurs realizowany na Wydziale Inżynierii Lądowej i Środowiska  (WILiŚ) Politechniki Gdańskiej. Studia:   II stopnia - magisterskie, stacjonarne Kierunek: Budownictwo Semestr:  1 (letni) Presentation of basic hydro and marine civil engineering structures together with basic computational procedures for determining environmental forces acting on a structure (vertical-wall breakwater, rubble mound breakwater, submarine pipelines...

  • Experimental Research of an Axial Piston Pump with Displaced Swash Plate Axis of Rotation

    Publication

    - Year 2021

    The article describes the influence of displacement of the swash plate rotation axis on the efficiency of axial piston pumps. The dead space volume was defined as the volume of the working chamber in the extreme position of the piston at the end of the pumping phase and its variability was determined as a function of the position of the axis of rotation of the swash plate and the swing angle of swash plate. The influence of swash...

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  • Influence of Gaps’ Geometry Change on Leakage Flow in Axial Piston Pumps

    Publication

    - Year 2021

    Axial piston pumps are the core elements of most medium and high-pressure hydraulic systems. High volumetric efficiency and high working pressures are the main advantages of this type of pumps. Therefore it is necessary to accurately calculate the leakage flow through the gaps to design efficient high-pressure pump. The main difficulty of such calculations is the fact, that the gaps change their geometry during pumping process....

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  • CFD Simulations and Tests of a Prototype Flow Control Valve

    Publication

    - Year 2021

    In this paper a prototype of a flow control valve is described and numerically simulated. The flow control valve is used in hydraulic systems to maintain constant fluid flow despite changing loads of a receiver. The standard construction of this type of valves is modified mainly by eliminating the spring. The prototype consists the hydrostatically unloaded throttle valve and pressure ratio valve substituting pressure difference...

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  • Influence of Properties of Hydraulic Fluid on Pressure Peaks in Axial Piston Pumps’ Chambers

    Publication

    - ENERGIES - Year 2021

    The article concentrates on the research of the pressure peaks in a working chamber of an axial piston pump. The main focus of the article is the influence of fluid properties on the pressure peaks value. Experimental and analytical methods were used to determine the impact of the fluid density, viscosity, compressibility and aeration. The article describes the pressure peak generation process and explains the theoretical basis...

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  • Improved model of isothermal and incompressible fluid flow in pipelines versus the Darcy–Weisbach equation and the issue of friction factor

    In this article, we consider the modelling of stationary incompressible and isothermal one-dimensional fluid flow through a long pipeline. The approximation of the average pressure in the developed model by the arithmetic mean of inlet and outlet pressures leads to the known empirical Darcy–Weisbach equation. Most importantly, we also present another improved approach that is more accurate because the average pressure is estimated...

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  • Zuzanna Cuban Mgr inż.

    People

  • Zintegrowane sterowanie systemami zaopatrzenia w wodę pitną

    Publication

    - Year 2005

    Optymalne ekonomicznie zaspokojenie w miastach bieżącego zapotrzebowania na wodę pitną tak, aby spełnione były wymagania jakości dostaw oraz jakości samej wody jest złożonym zadaniem. Zarówno aspekty aplikacyjne jak i teoretyczne tego problemu są przedmiotem intensywnych prac prowadzanych w sektorach naukowych i przemysłowych na całym świecie. Prace te finansowane są przez przemysł, komitety naukowe oraz Programy Ramowe Unii Europejskiej....