- Author
- White, G. | Tinker, S. C. | diMarzo, M.
- Title
- Modelling of Dropwise Evaporative Cooling on a Semi-Infinite Solid Subjected to Radiant Heat Input.
- Coporate
- Maryland Univ., College Park
- Sponsor
- National Institute of Standards and Technology, Gaithersburg, MD
- Book or Conf
- International Association for Fire Safety Science. Fire Safety Science. Proceedings. 4th International Symposium. July 13-17, 1994, Intl. Assoc. for Fire Safety Science, Boston, MA, Ottawa, Ontario, Canada, Kashiwagi, T., Editors, 217-228 p., 1994
- Keywords
- fire research | fire safety | fire science | solids | cooling | evaporation | formulations | validation
- Identifiers
- phenomenology; hot solid surfaces; radiant heat input
- Abstract
- A model for the prediction of dropwise evaporative cooling over hot solid surfaces is proposed for the case of radiant heat input. A detailed representation of the droplet shape during the transient is provided. The direct radiant contribution to the evaporative process is expressed as a liquid-vapor interfacial term and a constant heat absorption term within the liquid layer. The liquid layer is treated with a one-dimensional heat conduction approximation justified by previous results and three sub-models are used to describe it during the transient. A boundary element method for the solid thermal behavior, previously developed, is extended to this case. The results obtained from a closed-form solution, with simplified solid-liquid interfacial boundary conditions, are also included. Comparisons with the experimental data illustrate the adequacy of the model and the performance of the closed-form solution.