CAJ | 학술논문

在发动机的冷却系统内用纳米流体代替传统的冷却工质水，对六缸柴油机采用整体耦合的方法，将冷却系统与内燃机固体部件当作一个耦合体，使流固边界成为内部实时边界，对纳米流体在整机冷却系统中的流动与传热特性进行研究，考察不同种类、不同体积分数、不同粒径的纳米流体对内燃机冷却系统传热的影响规律，给出了整机冷却水套内冷却液的流场、换热系数、压力场以及准确的温度场分布，为内燃机热应力的计算以及纳米流体在柴油机冷却水腔的应用奠定了理论基础。
재발동궤적냉각계통내용납미류체대체전통적냉각공질수，대륙항시유궤채용정체우합적방법，장냉각계통여내연궤고체부건당작일개우합체，사류고변계성위내부실시변계，대납미류체재정궤냉각계통중적류동여전열특성진행연구，고찰불동충류、불동체적분수、불동립경적납미류체대내연궤냉각계통전열적영향규률，급출료정궤냉각수투내냉각액적류장、환열계수、압력장이급준학적온도장분포，위내연궤열응력적계산이급납미류체재시유궤냉각수강적응용전정료이론기출。
Nanofluids were employed in the cooling system of internal combustion engine(ICE)instead of traditional cooling water. Based on the fluid-solid coupling method,the cooling system and solid parts of ICE were treated as a coupled component. The flow and heat transfer characteristics of nanofluids inside cooling systems were investigated with the fluid-solid contact surface as the internal real-time boundary. The effects of nanoparticles,concentration and diameters on the cooling process inside ICE were further explored. The distributions of flow field,heat transfer coef-ficient,pressure field and temperature field were given,which provides a theoretical basis for the thermal stress calculation and nanofluids application in engines.