A Cylinder Pressure Correction Method Based on Calculated Polytropic Exponent

2017 ◽  
Author(s):  
Weihua Sun ◽  
Wei Du ◽  
Xuefei Dai ◽  
Xiangdong Bai ◽  
Zhiping Wu
Keyword(s):  
Correction Method ◽  
Cylinder Pressure ◽  
Pressure Correction ◽  
Polytropic Exponent

Numerical Investigations of Centrifugal Compressor Flows With Tip Leakage Using a Pressure Correction Method

1993 ◽  
Author(s):  
A. Tourlidakis ◽  
R. L. Elder
Keyword(s):  
Flow Pattern ◽  
High Speed ◽  
Stokes Equations ◽  
Correction Method ◽  
Secondary Flows ◽  
Tip Clearance ◽  
Physical Models ◽  
Wake Flow ◽  
Operating Characteristics ◽  
Pressure Correction

In this paper, a three-dimensional computational model for the solution of the time-averaged Navier-Stokes equations, based on a pressure correction method and the k-ε turbulence model, is presented and implemented for the viscous flow modelling through a series of centrifugal compressors. Theoretical calculations with the current fully elliptic method are carried out and the results are compared critically with available experimental data and with results from other computational models. A radial and two backswept high-speed subsonic compressors with different geometrical and operating characteristics are analysed at design and off-design conditions. In all cases, a wake flow pattern is evident and strong secondary flows are discerned. The tip clearance effects on the relative flow pattern are found to be important and are appropriately simulated. The predictive capability of the current flow model is judged to be encouraging taking into consideration the limitations of the physical models and the numerical schemes involved in the computations.

A conservative pressure-correction method for flow at all speeds

2003 ◽  
Vol 32 (8) ◽  
pp. 1113-1132 ◽  
Author(s):  
D.R. van der Heul ◽  
C. Vuik ◽  
P. Wesseling
Keyword(s):  
Correction Method ◽  
Pressure Correction ◽  
All Speeds

Parallelisation of Pressure Correction Method on Unstructured Grids

1999 ◽  
pp. 451-458
Author(s):  
T.M. Lin ◽  
Y.-C. Chuang ◽  
J.K. Lee ◽  
K.L. Wu ◽  
C.A. Lin
Keyword(s):  
Unstructured Grids ◽  
Correction Method ◽  
Pressure Correction
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