Heat transfer - A review of 2001 literature

Entrainment of gas in the liquid film of horizontal, annular, two-phase flow

The objective of this work was to study the effect of container orientation on heat transfer during reciprocation agitation thermal processing of cans filled with liquid particulate mixtures. A vertical steam retort, retrofitted with a mechanism to provide horizontal reciprocation of containers, was used in this study. Cans of size 307 × 409, filled with 30 % (v/v) Nylon particles in a Newtonian fluid (100 % glycerin), were placed inside the reciprocating cage with longer axis in one of the three possible orientations viz. horizontal along axis of reciprocation (HA), horizontal perpendicular to axis of reciprocation (HP), or vertical (V). Reciprocation frequency (1–4 Hz) and amplitude (5–25 cm), and container headspace (2–12 mm) were varied according to a full factorial experimental design, and heat transfer coefficients and process times associated with each orientation were calculated. Additional experiments were also carried out in still mode to study the effect of container orientation in static processing mode. Results showed that for the static mode, HA and HP provided more rapid heating than V. For agitation processing, HA provided more rapid heat transfer followed by HP and then V, respectively. Reciprocation frequency and amplitude affected the heat transfer significantly (p < 0.05) in all orientations, while headspace was significant only for HA. An agitation intensity (AI) parameter was defined based on reciprocation frequency and amplitude. An AI value of 3.0 g was found sufficient for HA cans, while HP and V cans required a higher AI of 6.0 g for optimum heat transfer. This study could be used in designing of reciprocation thermal processes with optimal heat transfer delivery.

Effect of Can Orientation on Heat Transfer Coefficients Associated with Liquid Particulate Mixtures During Reciprocation Agitation Thermal Processing

Heat transfer in intermittent air-water flows-Part I Horizontal tube

Condensation in a vertical tube bundle passive condenser – Part 1: Through flow condensation

Evaporation and condensation of steam-water in a vertical tube

Heat transfer in horizontal slug flow

Topology optimization of simplified convective heat transfer problems using the finite volume method

A numerical analysis based on stress-blended eddy simulation was conducted to investigate the pressure fluctuation of the bow of a submarine at various velocities (5.93 kn, 10 kn, and 12 kn). The simulation results were compared with the experimental data to demonstrate the validity of the numerical method. Self-power spectrum and wave-number frequency spectrum were discussed from the perspective of energy. The results show that with increasing submarine velocity, the pressure fluctuation in the axial direction increases, the transition point moves forward, and the frequency of the Tollmien–Schlichting wave raises.

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G. Sun

Papers

Evaporation and condensation of steam-water in a vertical tube

Heat transfer in horizontal slug flow

Topology optimization of simplified convective heat transfer problems using the finite volume method

Numerical Research of the Pressure Fluctuation of the Bow of the Submarine at Different Velocities