The Drag Reduction and Convective Heat Transfer Characteristics of Two-Phase Flow with Polymer Additives

고분자 물질 첨가에 의한 2상 유동의 마찰 항력 감소와 대류 열전달 특성

This experimental study was conducted to figure out the drag reduction and convective heat transfer in vertical downward two-phase flow with polymer additives. The drag reduction effect were analyzed by using the difference of the pressure drop between the flow with polymer additives and without it. Experimental results show that the pressure drop with polymer additives is less than the pressure drop without polymer in vertical downward two-phase flow. And the convective heat transfer has decreased with increasing the polymer concentration in vertical downward two-phase flow.