| Title |
A Numerical Study on Plate-Type Heat Exchanger Using One-Dimensional Flow Network Model and Porous-Media Model |
| Authors |
Jaehyun Park ; Minsung Kim ; June Kee Min ; Man Yeong Ha |
| DOI |
http://dx.doi.org/10.6110/KJACR.2016.28.1.021 |
| Keywords |
전산유체역학 ; 열교환기 ; 다공성 매질 해석 ; 열유동 네트워크 Computational Fluid Dynamics ; Heat exchanger ; Porous media model ; Flow and thermal network |
| Abstract |
A typical heat exchanger, found in many industrial sites, is made up of a large number of unitary cells, which causes difficulties when carrying out full-scale three-dimensional numerical simulations of the heat exchanger to analyze the aero-thermal performance. In the present study, a three-dimensional numerical study using a porous media model was carried out to evaluate the performance of the heat exchanger modelled in two different ways：full-scale and simplified. The pressure drop in the air side and gas side along with the overall heat transfer rate were calculated using a porous media model and the results were then compared to results obtained with a one-dimensional flow network model. The comparison between the results for two different geometries obtained using a porous media model and a one-dimensional flow network model shows good agreement between the simplified geometry and the one-dimensional flow network model. The full-scale geometry shows reasonable differences caused by the geometry such as sudden expansion and contraction. |