TY - JOUR
T1 - The effect of streamwise vortices on the frost growth rate in developing laminar channel flows
AU - Jacobi, A. M.
N1 - Funding Information:
This research was supported by the Air Conditioning and Refrigeration Center (ACRC). The ACRC is a National Science Foundation, industry, and university cooperative research center at the University of Illinois. The first author also received partial support through an ASHRAE grant-in-aid.
PY - 1999/10
Y1 - 1999/10
N2 - An experimental study is presented to assess the influence of streamwise vortices on frost growth in a steady, developing, laminar channel flow. Using a simple model and scale analysis, frost growth rate (ablimation) data are normalized with respect to temperature, humidity and time. Measurements from baseline experiments in a rectangular channel are found to be accurately correlated using the proposed scaling relation. Upon introducing streamwise vortices in the channel flow, frost growth still follows the scaling relation, but local growth rates were observed to increase by more than 7% in regions where the streamwise vortices induce a surface-normal flow toward the frost surface. Frost thickness measurements, flow visualization, and deposition patterns are used to explain these findings.
AB - An experimental study is presented to assess the influence of streamwise vortices on frost growth in a steady, developing, laminar channel flow. Using a simple model and scale analysis, frost growth rate (ablimation) data are normalized with respect to temperature, humidity and time. Measurements from baseline experiments in a rectangular channel are found to be accurately correlated using the proposed scaling relation. Upon introducing streamwise vortices in the channel flow, frost growth still follows the scaling relation, but local growth rates were observed to increase by more than 7% in regions where the streamwise vortices induce a surface-normal flow toward the frost surface. Frost thickness measurements, flow visualization, and deposition patterns are used to explain these findings.
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U2 - 10.1016/S0017-9310(99)00045-9
DO - 10.1016/S0017-9310(99)00045-9
M3 - Article
AN - SCOPUS:0344199838
SN - 0017-9310
VL - 42
SP - 3787
EP - 3802
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
IS - 20
ER -