Large eddy simulations and stereoscopic particle image velocimetry measurements in a scraped heat exchanger crystallizer geometry
نویسندگان
چکیده
منابع مشابه
Large Eddy Simulations and stereoscopic particle image velocimetry measurements in a scraped heat exchanger crystall izer
The transport phenomena in scraped heat exchanger crystallizers are critical for the process performance. Fluid flow and turbulence close to the heat exchanger (HE) surface as generated by stirring elements and scraper blades are crucial in this respect as they aim at avoiding an insulating scale layer on the HE surface. For this reason we performed largeeddy simulations of the turbulent flow (...
متن کاملMeasurement of Flow Field and Wall Temperature Distribution in a Scraped Heat Exchanger Crystallizer
During crystallization the control and effective distribution of heat transfer from the solution to the heat exchanger (HE) plays an important role. Inhomogeneity in temperature on the HEsurface limits the production capacity and increases the tendency of an isolating scale layer formation. To avoid scaling, scraper blades on the HE are commonly used. In a typical axi-symmetric geometry the sca...
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[1] Large-scale particle image velocimetry (LSPIV) is a nonintrusive approach to measure velocities at the free surface of a water body. The raw LSPIV results are instantaneous water surface velocity fields, spanning flow areas up to hundreds of square meters. Measurements conducted in typical conditions in conjunction with appropriate selections of parameters for image processing resulted in m...
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In Stereoscopic Particle Image Velocimetry (Stereo-PIV), the three velocity components are obtained by illuminating a planar region in the fl ow fi eld and recording the region of interest using two cameras at an angle. Calibration, planar velocity estimation, and velocity reconstruction are the three essential steps involved in the process. Earlier efforts to quantify the accuracy in a Stereo-...
متن کاملComputational Fluid Dynamics and Measurement of Flow Field and Wall Temperature Distribution in a Scraped Heat Exchanger Crystallizer
During crystallization the control and effective distribution of heat transfer from the solution to the heat exchanger (HE) plays an important role. Inhomogeneity in temperature on the HE-surface limits the production capacity and increases the tendency of an isolating scale layer formation. To avoid scaling, scraper blades on the HE are commonly used. In a typical axi-symmetric geometry the sc...
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ژورنال
عنوان ژورنال: Chemical Engineering Science
سال: 2009
ISSN: 0009-2509
DOI: 10.1016/j.ces.2009.01.034