Wind Tunnel Experiments on Wakes in Stratified Flow Including Modeling Criteria and Development of Experimental Equipment.

摘要

Wind tunnel experiments were conducted on dimensions of the turbulent wake from an 8 inch disk model in thermally stratified flow. Results were interpreted in terms of densimetric Froude number as the modeling criterion. The substantial agreement with reported hydrodynamic experiments shows the potential for using wind tunnels to study submarine wakes in stratified flow. An additional modeling criterion for vertical density gradient based on momentum flux may be important for momentumless wakes. Development of experimental equipment needed to obtain uniform wind tunnel airstreams at very low speeds with thermal stratification is described. (Author)