Microenvironmental Modification by Small Water Droplet Evaporation

Fred V. Nurnberger Agricultural Engineering Department, Michigan State University, East Lansing 48823

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George E. Merva Agricultural Engineering Department, Michigan State University, East Lansing 48823

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James B. Harrington Jr. Forest Fire Research Institute, Canadian Forestry Service, Ottawa, Ontario, Canada

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Abstract

A mathematical model is developed to predict the microclimatic modification of air near the ground by the evaporation of an ultrafine water mist. The model equations with realistic parameters and boundary values are solved using the Patankar and Spalding control volume integral technique. The reported field experiment provides reasonable preliminary confirmation of the model. The maximum predicted cooling under the conditions tested is −14.6°C.

Abstract

A mathematical model is developed to predict the microclimatic modification of air near the ground by the evaporation of an ultrafine water mist. The model equations with realistic parameters and boundary values are solved using the Patankar and Spalding control volume integral technique. The reported field experiment provides reasonable preliminary confirmation of the model. The maximum predicted cooling under the conditions tested is −14.6°C.

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