Finite Analytic Solution of Convective Heat Transfer for Tube Arrays in Crossflow: Part II—Heat Transfer Analysis

Abstract

The convective heat transfer and pressure drop in flow past two types of tube array are solved numerically by the Finite Analytic Method in this investigation. The tube arrays considered are an in-line tube array and a staggered tube array with longitudinal and transverse pitch of two. The flow field solution is obtained and analyzed in Part I of the study. In the present Part II, the temperature field, heat transfer characteristics, and pressure drop are investigated. The fluid and tubes are considered to be at the same temperature, except for the array tube, which is heated or cooled. The solution domain covers three pitches of tube arrays in order to simulate accurately the non-periodic behavior of the temperature field downstream of the heated tube. In general, the heat transfer in a staggered array of tubes is found to be higher than that in an in-lined array of tubes. However, the pressure drop in a staggered array arrangement is also higher. Local heat transfer varies between in-line and staggered tube arrays and depends on Reynolds number and Prandtl number. At high Reynolds number, the local heat transfer tends to peak at the upstream surface of the heated tube but away from the stagnation point and becomes minimum at the separation point. Heat transfer in recirculation zones are, in general, small.

Numerical simulation of laminar flow and heat transfer over banks of staggered cylinders

“…It can be seen that the results of the present study agree very well with the numerical results of Chen and Wung [13] and Wung and Chen [16].…”

A thermodynamic analysis of forced convection through porous media using pore scale modeling

“…Figure 7 also compares three different solution sets for the Nu in the circular cross-sectional configuration. Examining the trends of the present results, it is apparent that the current results correlate best with those of Wakao and Kaguei [43] and less well with those of Cheng and Wung [47]. This may be due in part to the fact that Chen and Wung [47] assumed a three times larger REV than the assumed REV in the current investigation, and geometrical symmetry was assumed.…”

Numerical investigation of hydrodynamics and mass transfer for in-line fiber arrays in laminar cross-flow at low Reynolds numbers

“…Several studies on the numerical simulation of hydrodynamics and heat transfer of flow through tube banks have been published during the last decades (Launder and Massey, 1978;Chen and Wung, 1989;Wung and Chen, 1989). It was reported that heat transfer coefficients on the shell-side of cross flow units are higher than those in parallel units in all the test cases.…”