Analysis of Flow Mal-Distribution in a Cross-Flow Heat Exchanger

Krishna P. Mohan; Shekar M. Santosh; M. Ramakanth; M.R. Thansekhar; M. Venkatesan

doi:10.4028/www.scientific.net/AMM.592-594.1428

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 592-594Analysis of Flow Mal-Distribution in a Cross-Flow...

Analysis of Flow Mal-Distribution in a Cross-Flow Heat Exchanger

Abstract:

Flow mal-distribution is defined as the non-uniform fluid flow distribution among the parallel channels having a common header. Flow mal-distribution is present in every header channel assembly. This mal-distribution has a significant effect on the performance of the heat exchanger by increasing the pressure drop and affecting the heat transfer characteristics. However, in designing a heat exchanger, a uniform flow distribution in each channel is assumed. The present work attempts to reduce the flow mal-distribution in a cross flow heat exchanger. A numerical analysis is done using a commercial code ANSYS FLUENT 3D and the results are validated experimentally. A parametric study is done by changing the size of the channels within the heat exchanger so as to reduce the flow mal-distribution. The effect of varying channel size on flow mal-distribution and pressure drop across the heat exchanger is studied and a geometry with reduced flow mal-distribution is found.

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Periodical:

Applied Mechanics and Materials (Volumes 592-594)

Pages:

1428-1432

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.592-594.1428

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Online since:

July 2014

Authors:

Krishna P. Mohan, Shekar M. Santosh, M. Ramakanth, M.R. Thansekhar, M. Venkatesan*

Keywords:

Flow Mal-Distribution, Heat Exchanger, Numerical Study, Parametric Study, Pressure Drop

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