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1 May 2018 Numerical Computation of Rapid Flow over Steep Terrain Using Total Acceleration Method
Dong Sop Rhee, Si Wan Lyu, Chang Geun Song
Author Affiliations +

Rhee, D.S.; Lyu, S.W., and Song, C.G., 2018. Numerical computation of rapid flow over steep terrain using total acceleration concept. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 986–990. Coconut Creek (Florida), ISSN 0749-0208.

To model the rapid mass movement over steep slope under the framework of shallow water flow, total acceleration method (TAM hereafter) was adopted, and an extended two-dimensional hydrodynamic flow model was developed. This approach can be regarded as gravity modeling as eddy viscosity in turbulence modeling. It was found that the developed flow model with total acceleration method gave satisfactory results in predicting the front propagation speed, flow depth, and bed-shear stress under significant non-hydrostatic condition. TAM reproduced considerable difference in describing the routing of fast flow compared with usual 2DH model.

©Coastal Education and Research Foundation, Inc. 2018
Dong Sop Rhee, Si Wan Lyu, and Chang Geun Song "Numerical Computation of Rapid Flow over Steep Terrain Using Total Acceleration Method," Journal of Coastal Research 85(sp1), 986-990, (1 May 2018).
Received: 30 November 2017; Accepted: 10 February 2018; Published: 1 May 2018
modified shallow water equations
Non-hydrostatic acceleration
total acceleration method
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