Relative increase in heat transfer in viscous-inertial regimes of flow of helium at supercritical pressure in a heated pipe

Heat transfer to supercritical fluids flowing in channels—empirical correlations (survey)

“…At ψ > 2, e.g., in the region of deteriorated heat transfer, the following equation must be used: Bogachev et al (1983) gave special attention to the conditions of heat transfer increase during turbulent flow of helium, where free convection effect can be neglected. The experiments were carried out in a vertical tube (D = 1.8 mm, L total = 0.51 m, and L = 0.4 m) with q w = constant.…”

An Investigation on Heat Transfer to Supercritical Water in Inclined Upward Smooth Tubes

“…After a 30-year break, the investigation of developing nuclear reactors cooled with supercritical water was attractive again. Bogachev et al [11] carried out the experiment in a vertical tub and gave special attention to the conditions of heat transfer increase during the turbulent flow of helium, where the free convection effect can be neglected. Kirillov et al [12] showed that the role of free convection in heat transfer at the near-critical point should be taken into account.…”

Experimental study on heat transfer of aviation kerosene in a vertical upward tube at supercritical pressures

“…(19) decrease along the flow direction, while the fluid temperature in the second term rises. So the wall temperature can either increase or decrease, depending on the counteracting effect of those two terms.…”

“…3 kerosene under supercritical conditions and discovered that the cracking temperature of China No. 3 kerosene was in the range between 800 and 1000 K. Based on the experimental data, researchers proposed many correlations for heat transfer coefficient at supercritical pressure (Bringer and Smith [15], Shitsman [16], Domin [17], Yeroshenko and Yaskin [18], Bogachev et al [19], Kirillov et al [20], Kitoh et al [21], Jackson [22], Zhong et al [5]). Most of the correlations for supercritical fluids are in the following two forms [23]:…”