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Nonbuoyancy density-driven convective mass and heat transfer : scaling analysis and solution methodology.

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Nonbuoyancy density-driven convective mass and heat transfer : scaling analysis and solution methodology.
นักวิจัย : Krantz, William B. , Lee, Hanyong. , Chaudhuri, Siladitya Ray. , Hwang, Sun-Tak.
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2554
อ้างอิง : Krantz, W. B., Lee, H., Chaudhuri, S. R., & Hwang, S. T. (2011). Nonbuoyancy Density-Driven Convective Mass and Heat Transfer: Scaling Analysis and Solution Methodology. AIChE Journal, 58(3), 678-689. , 1547-5905 , http://hdl.handle.net/10220/11017 , http://dx.doi.org/10.1002/aic.12631
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : AIChE journal
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Density change during mass or heat transfer can cause convection in the absence of buoyancy forces. Prior studies have shown that this convection can be significant in the determination of diffusion coefficients and in the casting of polymeric membranes. Including this effect is challenging even for advanced numerical codes. A general methodology for obtaining the mass-average velocity for unsteady-state, one-dimensional, multicomponent mass and/or heat transfer circumvents the problem of numerically solving the coupled continuity equation. Scaling analysis permits assessing the importance of this convection for a generic equation-of-state. Numerical predictions for evaporation from a liquid layer for components having density ratios of 1:1 and 0.7:1 indicate that ignoring convection results in errors of 34% and 24% in the evaporation time and final thickness, respectively. This convection also influences the evaporation in the percutaneous application of cosmetics, medications, and insecticides, curing of paints, varnishes, and lacquers, and formation of thin films.

บรรณานุกรม :
Krantz, William B. , Lee, Hanyong. , Chaudhuri, Siladitya Ray. , Hwang, Sun-Tak. . (2554). Nonbuoyancy density-driven convective mass and heat transfer : scaling analysis and solution methodology..
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Krantz, William B. , Lee, Hanyong. , Chaudhuri, Siladitya Ray. , Hwang, Sun-Tak. . 2554. "Nonbuoyancy density-driven convective mass and heat transfer : scaling analysis and solution methodology.".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Krantz, William B. , Lee, Hanyong. , Chaudhuri, Siladitya Ray. , Hwang, Sun-Tak. . "Nonbuoyancy density-driven convective mass and heat transfer : scaling analysis and solution methodology.."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2554. Print.
Krantz, William B. , Lee, Hanyong. , Chaudhuri, Siladitya Ray. , Hwang, Sun-Tak. . Nonbuoyancy density-driven convective mass and heat transfer : scaling analysis and solution methodology.. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2554.