Publisher : The Korean Hydrogen and New Energy Society
DOI : 10.7316/KHNES.2015.26.6.659
Title & Authors
Experimentally Evaluation of a Liquid Pool Spreading Model with Continuous Release KIM, TAEHOON; DO, KYU HYUNG; KIM, MYUNGBAE; HAN, YONG-SHIK; CHOI, BYUNG-IL;
In this study, an experimental investigation is performed for evaluation of a liquid pool spreading model with continuous release. The model considered in this study was developed based on a concept which means that the liquid pool spreading is governed by a balance between an inertia force from gravity and a frictional force from friction with the ground under the whole base of the liquid pool. For evaluation of the model, experimental study is performed. Experimental apparatus is setup for measuring release rate, spreading velocity, and evaporation rate from a liquid pool. The experimental results are compared with results from the model. By applying release and evaporation rates obtained from experiments to solving the model, liquid pool radius variation according to time can be obtained. For evaluation of an effect of friction force in the spreading model, results obtained from the models with and without the friction force are compared with those obtained from the experiments. As a result, it is shown that there exists a large deviation between the results obtained from the model without the friction force and the experimental results. On the other hand, the tendency of liquid pool radius variation according to time is similar between the results obtained from the model without the friction force and the experimental results.
Pool spreading;Continuous release;Frictional force;
A. G. Venetsanos and J. G. Bartzis, "CFD Modelling of Large-Scale LH2 Spills in Open Environment", Proc. of International Conference on Hydrogen Safety, Pisa, Italy, pp. 125-146.
D. M. Webber, "On Models of Spreading Pools", J. Loss Prevention in the Process Industries, 25, 2012, pp. 923-926.
C. J. H. van den Bosch and R. A. P. M. Weterings, "Methods for the Calculation of Physical Effects (TNO Yellow Book)", 3rd Ed, 1997, TNO, The Hague, The Netherlands.
K. Verfondern and B. Dienhart, "Pool Spreading and Vaporization of Liquid Hydrogen", Int. J. Hydrogen Energy, 32, 2007, pp. 2106-2117.