Jabbari,P. Davami.Effect of pressure on heat transfer coefficient at the metal/mold interface of A356 aluminum alloy[J].International Communications in Heat and Mass Transfer.2012(5)Effect of pressure on heat transfer coefficient at the metal/mold interface of A356 aluminum alloy[J] . A. Far...
Uo is the overall heat transfer coefficient between the water surface and the environment given as:[9]Uo=hw·Tg−Ta/Tg−Ts+hrgsand the surface area Ar is the ratio of cover area Ag to the free horizontal surface area of the salt water in the basin Aw:[10]Ar=Ag/Aw. ...
The heat transfer coefficient at the metal-mold interface ( h MM ) has been determined for the first time during the centrifugal casting of a Fe-C alloy tube using the inverse solution method. To apply this method, a centrifugal casting experiment was carried out to measure cooling curves ...
RELATIONSHIP BETWEEN METAL-DIE INTERFACIAL HEAT TRANSFER COEFFICIENT AND CASTING SOLIDIFICATION RATE IN HIGH PRESSURE DIE CASTING PROCESS压铸过程中铸件-铸型界面换热系数与铸件凝固速率的关系压铸界面换热系数凝固速率镁合金AM铝合金ADC铸件工艺参数铸型工艺条件...
碳传递系数 carbon mass transfer coefficient 单位时间(秒)内气氛传递到工件表面单位面枳的碳最(碳通量)与气氛碳势和工件表面含碳量(碳钢)之间的差值之比。 退碳decarburizing 有意使工件表面降碳的化学热处理。 复碳carbon restoration 工件因某种原因脱碳后,为恢复初始碳含量而进行的渗碳。 过渗碳 overcarburizing...
Boiling curves represent performance factors, including the critical heat flux (CHF), the heat transfer coefficient (HTC) and the onset of nucleate boiling11. and counteracting liquid, and the interface-inspired accessibility is explained with morphology-induced interfa- cial effects involving static ...
Vapor condensation is routinely used as an effective means of transferring heat or separating fluids. Dropwise condensation, where discrete droplets form on the condenser surface, offers a potential improvement in heat transfer of up to an order of magni
Thus, the obtained heat transfer coefficient is similar to that of initial heating stage (Miller et al., 1994; Sahin et al., 1999b). To solve this problem, Costa et al. (1999) used some wet food samples under the metal body in order to simulate bubbling conditions (like boiling phase...
Calmidi and Mahajan [11] experimentally and numerically studied forced convection in high-porosity metal foam over a range of porosities and pore densities using air as the working fluid. In a similar study, Hwang et al. [12] showed that the volumetric heat transfer coefficient increased with ...