Experimental and numerical studies of heat transfer from a liquid bath due to an impinging gas jet

Journal Article · Sat May 01 04:00:00 EDT 1999 · Journal of Heat Transfer

DOI:https://doi.org/10.1115/1.2825985· OSTI ID:361751

Qian, F; Farouk, B; Mutharasan, R ^[1]; Macken, N ^[2]

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1. Drexel Univ., Philadelphia, PA (United States)
2. Swarthmore Coll., PA (United States). Dept. of Engineering

An impinging gas jet on a liquid surface is found in many industrial systems. In electric arc furnaces and in welding processes, a highly energetic gas jet impinges on a liquid bath/pool. In many metal processing operations, a gas jet (top-blown) is used to carry out alloying and purification operations. A fundamental understanding of the interaction of a gas jet and a liquid bath can provide important insights into process behavior, resulting in improved efficiency in such systems. There have been extensive heat transfer studies of impinging gas jets on solid surfaces, but few on impinging gas jets on a liquid bath. In this paper, air-jet-induced transport in a heated liquid bath is considered. Two different liquids having widely different Prandtl numbers (silicone oil and a molten metal alloy, Amalloy-203{reg_sign}) were used as bath liquids. Both numerical calculations and experimental measurements were carried out to characterize the jet-induced flow and heat transfer in the liquid bath. The numerical model developed considers the interaction of the jet flow and the liquid bath circulation. The mixing and thermal behavior of the heated bath were determined as functions of the air-jet characteristics (inlet temperature, Reynolds number) and the bath liquid properties (liquid Prandtl number and a bath Grashof number).

• Sponsoring Organization: USDOE
• OSTI ID: 361751
• Journal Information: Journal of Heat Transfer, Journal Name: Journal of Heat Transfer Journal Issue: 2 Vol. 121; ISSN JHTRAO; ISSN 0022-1481
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
42 ENGINEERING
EFFICIENCY
GAS FLOW
HEAT TRANSFER
IMPINGEMENT
JETS
LIQUIDS
MIXING
NUMERICAL ANALYSIS