A role of the heat and work uncompensatedtransformations in the balance of entropy and theturbomachinery efficiency

Tomasz Kowalczyk; Paweł Ziółkowski; Daniel Sławiński; Janusz Badur; Małgorzata Cisak

A role of the heat and work uncompensatedtransformations in the balance of entropy and theturbomachinery efficiency

Abstract

In the paper we have presented a procedure of estimating a role of the uncompensated transformation of heat and work in ow of viscous and heat conducting uid. The procedure was introduced by Professor Romuald Puzyrewski and is essential in local, in time and space, balance of entropy. Furthermore this unique approach leads to redenition the eciency of uid-ow machinery in three-dimensional modeling using CFD (Computational Fluid Dynamics) methods. The study has shown that usage of the polytropic eciency, instead of the isentropic eciency, is more comfortable and seems to be more natural in CFD approach. Helpful is also correlation between those two eciency denitions with usage of proposed Pu number.

Authors (5)

Tomasz Kowalczyk
- Instytut Maszyn Przepływowych PAN Zakład Konwersji Energii
Paweł Ziółkowski
- Instytut Maszyn Przepływowych PAN Zakład Konwersji Energii
Daniel Sławiński mgr inż.
- Instytut Maszyn Przepływowych PAN Zakład Konwersji Energii
Janusz Badur
- Instytut Maszyn Przepływowych PAN Zakład Konwersji Energii
Małgorzata Cisak mgr

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Category:: Articles
Type:: artykuły w czasopismach
Published in:: Transactions of the Institute of Fluid-Flow Machinery no. 135, pages 11 - 27,
ISSN: 0079-3205
Language:: English
Publication year:: 2017
Bibliographic description:: Kowalczyk T., Ziółkowski P., Sławiński D., Badur J., Cisak M.: A role of the heat and work uncompensatedtransformations in the balance of entropy and theturbomachinery efficiency// Transactions of the Institute of Fluid-Flow Machinery -Vol. 135, (2017), s.11-27
Verified by:: Gdańsk University of Technology