Wyniki wyszukiwania dla: TURBULENCE MODEL EVALUATION

• Turbulence model evaluation for numerical modelling of turbulent flow and heat transfer of nanofluids

  Publikacja

  • H. Boertz
  • A. Baars
  • J. Cieśliński
  • S. Smoleń

  - Applied Mechanics and Materials - Rok 2016

  In this work, Nusselt number and friction factor are calculated numerically for turbulent pipe flow (Reynolds number between 6000 and 12000) with constant heat flux boundary condition using nanofluids. The nanofluid is modelled with the single-phase approach and the simulation results are compared with experimental data. Ethylene glycol and water, 60:40 EG/W mass ratio, as base fluid and SiO2 nanoparticles are used as nanofluid...

• Curved Surface Minijet Impingement Phenomena Analysed with ζ-f Turbulence Model

  Publikacja

  • T. Kura
  • E. Fornalik-Wajs
  • J. Wajs
  • S. Kenjeres

  - ENERGIES - Rok 2021

  The jet impingement phenomenon plays an important role among the heat transfer intensification methods. Very often its application and analyses refer to simple flat surfaces, while there is a lack of information in the literature for cases addressing curved surfaces. In the present work, the single jet impingement on the non-flat (concave and convex) surface is studied for a wide range of geometries, which originate from the mini-jet...

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• EVALUATION OF 3D MODEL OF REBAR FOR QUANTITATIVE PARAMETERS

  Publikacja

  • A. H. Qureshi
  • W. S. Alaloul
  • A. Murtiyoso
  • S. J. Hussain
  • S. Saad
  • V. K. Oad

  - Rok 2022

  The construction industry practices and processes are evolving constantly, and with the emergence of Industry 4.0, the use of technologies is expanding. Construction progress monitoring is an essential project lifecycle process; project success and timely completion are linked with effective progress monitoring operations and adopted tools. In the domain of automated construction progress monitoring, 3D modeling techniques have...

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• Simulation model for evaluation of QOS dynamic routing

  Publikacja

  • M. Czarkowski
  • S. Kaczmarek

  - Rok 2009

  Current informational networks use a large variety of technologies to support data exchange. Most of them are focused on IP protocol and include mechanisms which by definition should supply demanded QoS. One of those mechanisms is efficient path calculation - routing. Traffic offered to the network can change very rapidly in short term. Routing should support such traffic changes and all the time calculate valid paths in terms...

• Implementation of Business Intelligence in an IT organization - the concept of an evaluation model

  Publikacja

  • T. Sitek
  • M. Litka

  - Foundations of Management - Rok 2013

  This paper presents the issue of assessing the validity and effectiveness of implementing a Business Intelligence system in an IT Support Organization. This entity provides IT services to external clients involving, in particular, the storage and processing of large amounts of data. The vast amount of realized projects and also incidents reported in connection with those projects prevented effective decisions from being made without...

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• Model of management of knowledge bases in the information technology evaluation environment

  Publikacja

  • T. Sitek
  • C. Orłowski

  - Rok 2008

  The paper presents the model of management of knowledge bases in multi-agent system for evaluation of information technologies (IT_MAS). Such system is being developed in Gdansk Uni-versity of Technology by Information Technology Management Team. Multi-agent system is supposed to support manager level specialists during decision processes when there is identified need to buy or change any information technology. The main goal of...

• e-Commerce Websites and the Phenomenon of Dropshipping: Evaluation Criteria and Model

  Publikacja

  • J. Winiarski
  • B. Marcinkowski

  - Rok 2020

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• An evaluation of effectiveness of fuzzy logic model in predicting the business bankruptcy

  Publikacja

  • T. Korol

  - Romanian Journal of Economic Forecasting - Rok 2011

  W artykule sprawdzono skuteczność pojedynczego modelu logiki rozmytej w prognozowaniu ryzyka upadłości przedsiębiorstw w Polsce. W badaniach wykorzystano wartości 14 wskaźników finansowych oraz ich dynamikę zmiany między pierwszym a drugim, drugim a trzecim oraz trzecim a czwartym rokiem objętymi analizą. We wnioskach omówiono różnicę w skutecznościach modelu uzyskanego na wartościach statycznych oraz dynamicznych wskaźników finansowych....

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• Conception of interactive information and decision support system - model and evaluation

  Publikacja

  • C. Orłowski
  • Ł. Szczygielski

  - Rok 2011

  This article presents conception of interactive information and decision support system for urban and industrial air quality management. The emphasis of the project is on real-time analysis and multi-media information, and support of distributed and mobile clients through the Internet.

• Simulation model for evaluation of QoS routing algorithm in large packet networks

  Publikacja

  • M. Czarkowski
  • S. Kaczmarek
  • S. Stępnicki

  - Zeszyty Naukowe Wydziału ETI Politechniki Gdańskiej. Technologie Informacyjne - Rok 2010

  The variety of traffic transferred via current telecommunication networks includes also voice, which should meet quality requirements. One of mechanisms, which can support QoS in current packet networks, is routing. There exist many routing proposals which should introduce the QoS into the network but practically they don't. Following paper presents the realization of simulation model for evaluation of a new routing algorithm DUMBRA...