Application research on numerical simulation of longitudinal flow shell heat exchanger

The numerical simulation method is proposed to study the longitudinal flow shell heat exchanger to overcome the shortcomings of the experimental research method. Using the similar theory, the numerical simulation model of the heat exchanger was determined, and the influence of the change of various structural parameters on its heat transfer and flow performance was analyzed, and the results showed that the rod arrangement between the single row of pipes, the reduction of the baffle grid spacing, and the increase of the tube bundle length-diameter ratio were all conducive to heat transfer, but at the same time, the flow resistance was also increased. The least squares method is used to further return the quasi-correlation of heat transfer and flow resistance under laminar flow of the longitudinal shell heat exchanger. It shows the significant advantages of using numerical simulation to research and develop heat exchangers.