Wyniki wyszukiwania dla: FLOW CONTROL VALVE

• CFD Simulations and Tests of a Prototype Flow Control Valve

  Publikacja

  • M. Zaleska-Patrosz
  • P. Patrosz
  • P. Śliwiński

  - Rok 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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• Numerical Simulations for Transonic Flow in Control Valve

  Publikacja

  • P. Flaszyński
  • P. Doerffer
  • G. Mikułowski
  • J. holnicki-Szulc

  - Rok 2013

  Results of numerical simulations for transonic flow in control valve are presented. The valve is the main part of an adaptive pneumatic shock absorber. Flow structure in the valve domain and the influence of the flow non-uniformity in the valve on a mass flow rate is investigated. Numerical simulation results are compared with experimental data.

• Flow through a prosthetic mechanical aortic valve: Numerical model and experimental study

  Publikacja

  • M. L. Nowak
  • E. Divo
  • T. Borkowski
  • E. Marciniak
  • M. Rojczyk
  • R. Bialecki

  - COMPUTERS & MATHEMATICS WITH APPLICATIONS - Rok 2024

  This research presents a numerical model dedicated for virtual patient diagnostics in the field of synthetic valve implantation. The model operates based on computational fluid dynamics solver with implemented rigid body motion solver. Characteristic indicators related to the prosthetic valve were determined to assess the correctness of cardiac system operation after implantation. A novel approach for dynamic time discretization...

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• Multiscale model for blood flow after a bileaflet artificial aortic valve implantation

  Publikacja

  • M. L. Nowak
  • E. Divo
  • W. P. Adamczyk

  - COMPUTERS IN BIOLOGY AND MEDICINE - Rok 2023

  Cardiovascular diseases are the leading cause of mortality in the world, mainly due to atherosclerosis and its consequences. The article presents the numerical model of the blood flow through artificial aortic valve. The overset mesh approach was applied to simulate the valve leaflets motion and to realize the moving mesh, in the aortic arch and the main branches of cardiovascular system. To capture the cardiac system’s response...

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• Flow Control Algorithm for UMTS HSDPA

  Publikacja

  • P. Matusz
  • J. Woźniak

  - Rok 2005

  HSDPA (High Speed Downlink Packet Access) jest istotnym etapem ewolucji systemu UMTS. Pozwala na transmisję do użytkownika z prędkością dochodzącą do 14.4 Mbit/s; aby to umożliwić, wprowadzono w wersji 5 UMTS szereg nowych mechanizmów w warstwie fizycznej oraz MAC. W tej pracy przedstawiono szczegółową analizę jednego z nowych mechanizmów - algorytmu kontroli natężenia ruchu między MAC-hs i MAC-d. Zaproponowano nowy, efektywny...

• Interline power flow controller - properties and control strategy in dynamic states

  Publikacja

  • R. Strzelecki
  • P. Smereczynski
  • G. Benysek

  - Rok 2005

  High-power electronic converter topologies, in such forms as Unified Power Flow Controllers (UPFC), Static Compensators (STATCOM) and Interline Power Flow Controllers (IPFC), have been used to enhance and optimize the use of transmission facilities, under the concept of a flexible ac transmission system (FACTS). In Europe, the anticipated proliferation of distributed-generation (DG) in the near future, driven by governmental initiatives...

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• Interline power flow controller - properties and control strategy in dynamic states

  Publikacja

  • R. Strzelecki
  • P. Smereczynski
  • G. Benysek

  - Rok 2005

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• Comprehensive circumscribing of non-linearity cases of a water supply system with smooth flow control

  Publikacja

  • R. M. Orłowski

  - Archives of Hydro-Engineering and Environmental Mechanics - Rok 2006

  W artykule opisano formalnie poprawne metody opisu matematycznego pracy pomp o płynnie regulowanych wydatkach oraz reduktorów ciśnienia i reduktorów przepływu w modelowaniu przepływów ustalonych zachodzących w systemach wodociągowych. Opisano metodę opartą o dynamiczną analizę wrażliwości systemu oraz metodę wykorzystującą charakterystyki hydrauliczne systemu wodociągowego. Przedstawiono wyniki symulacji wykorzystującej ww. metody...

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• Fully Separated Flow Control Using DBD Plasma Actuators Located at the Leading Edge of an Airfoil

  Publikacja

  • A. Leroy
  • P. Audier
  • D. Hong
  • J. Podliński
  • A. Berendt
  • J. Mizeraczyk

  - ERCOFTAC Bulletin - Rok 2013

  In the framework of the PLASMAERO European project, experiments were conducted to investigate the authority of surface DBD plasma actuators to alter a fully separated flow around an airfoil in order to improve its aerodynamic performances in its natural stall regime. In this paper, unsteady excitation control is more specifically investigated. The key control parameter studied here is the burst frequency which periodically imposes...

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• Comparative analysis of the flow control over a circular cylinder with detached flexible and rigid splitter plates

  Publikacja

  • F. Eydi
  • A. Mojra
  • R. Abdi

  - PHYSICS OF FLUIDS - Rok 2022

  A comparative study is performed on a circular cylinder with both flexible and rigid splitter plates (SPs). This study has the novelty of using single and dual detached SPs located downstream of the cylinder. The dimensionless gap distance between the first splitter plate and the cylinder as well as the distance between the SPs are varied. The strain of flexible SPs can be used for energy harvesting from the flow. Therefore, a...

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