Mean streamline analysis for performance prediction of cross-flow fans

2004 ◽  
Vol 18 (8) ◽  
pp. 1428-1434
Author(s):  
Jae Won Kim ◽  
Hyoung Woo Oh
Keyword(s):  
Performance Prediction ◽  
Cross Flow ◽  
Mean Streamline Analysis

scholarly journals Performance Prediction of Cross-Flow Fans Using Mean Streamline Analysis

2005 ◽  
Vol 2005 (2) ◽  
pp. 112-116 ◽  
Author(s):  
Jae-Won Kim ◽  
Eun Young Ahn ◽  
Hyoung Woo Oh
Keyword(s):  
Performance Prediction ◽  
Cross Flow ◽  
Prediction Method ◽  
General Purpose ◽  
Operating Conditions ◽  
Performance Predictions ◽  
Performance Curves ◽  
Mean Streamline Analysis ◽  
And Performance ◽  
Cross Flow Fan

This paper presents the mean streamline analysis using the empirical loss correlations for performance prediction of cross-flow fans. Comparison of overall performance predictions with test data of a cross-flow fan system with a simplified vortex wall scroll casing and with the published experimental characteristics for a cross-flow fan has been carried out to demonstrate the accuracy of the proposed method. Predicted performance curves by the present mean streamline analysis agree well with experimental data for two different cross-flow fans over the normal operating conditions. The prediction method presented herein can be used efficiently as a tool for the preliminary design and performance analysis of general-purpose cross-flow fans.

Performance prediction of mixed-flow pumps

1998 ◽  
Vol 212 (2) ◽  
pp. 109-115 ◽  
Author(s):  
E S Yoon ◽  
H W Oh ◽  
M K Chung ◽  
J S Ha
Keyword(s):  
Performance Prediction ◽  
Operating Conditions ◽  
Low Flow ◽  
Mixed Flow ◽  
Loss Model ◽  
Flow Recirculation ◽  
Internal Loss ◽  
The Mean ◽  
Loss Models ◽  
Mean Streamline Analysis

This paper presents the mean streamline analysis using the empirical loss models for performance prediction of mixed-flow pumps with high specific speeds. A new internal loss model to describe the effect of flow separation on the characteristic head-capacity curve with a dip in the low flow range is developed and a modified recirculation loss model for calculation of parasitic loss due to flow recirculation at the impeller exit is suggested in this study. The prediction performance of the proposed method here is tested against four sets of measured total heads and efficiencies of mixed-flow pumps, and it is also compared with that based on two-dimensional cascade theory. Predicted results by the present set of loss models agree very well with experimental data for a variety of mixed-flow pumps over the normal operating conditions.

1407 Study on performance prediction of a very low head cross-flow turbine

2010 ◽  
Vol 2010 (0) ◽  
pp. 403-404
Author(s):  
Ryouhei Koide ◽  
Takaya Kitahora ◽  
Morihito Inagaki ◽  
Masaki Uchida
Keyword(s):  
Performance Prediction ◽  
Cross Flow ◽  
Low Head

Optimization of Loss Models for Centrifugal Compressor Performance Prediction Based on Numerical Analysis Results

2013 ◽  
Vol 300-301 ◽  
pp. 225-231
Author(s):  
Bin Qi ◽  
Su Jun Dong ◽  
Jun Wang
Keyword(s):  
Numerical Analysis ◽  
Centrifugal Compressor ◽  
Performance Prediction ◽  
Vaned Diffuser ◽  
Numerical Result ◽  
Matlab Program ◽  
Ansys Cfx ◽  
Compressor Performance ◽  
Loss Models ◽  
Mean Streamline Analysis

An optimization of loss models for performance prediction of centrifugal compressors has been conducted in this paper. A centrifugal compressor with vaneless diffuser (VLD) and vaned diffuser (VD) is selected for the present study. The study begins with a numerical analysis, using commercial software ANSYS CFX. The numerical result is used to modify mean streamline analysis loss models. Matlab optimization toolbox is used for this purpose. Also, a matlab program is compiled to calculate the off-design performance of the centrifugal compressor. The results show that after optimizating the loss models, mean streamline analysis has a better accuracy than before.

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