Chen, JingChang (1980) Studies on gravitational spreading currents. California Institute of Technology . (Unpublished) http://resolver.caltech.edu/CaltechKHR:KHR40

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Abstract
The objective of this investigation is to examine the buoyancydriven gravitational spreading currents, especially as applied to ocean disposal of wastewater and the accidental release of hazardous fluids, such as liquefied natural gas. A series of asymptotic solutions are used to describe the displacement of a gravitationally driven spreading front during an inertial phase of motion and the subsequent viscous phase. Solutions are derived by a force scale analysis and a selfsimilar technique for flows in stagnant, homogeneous, or linearly densitystratified environments. The selfsimilar solutions for inertialbuoyancy currents are found using an analogy to the wellknown shallowwater wave propagation equations and also to those applicable to a blast wave in gasdynamics. For the viscousbuoyancy currents the analogy is to the viscous long wave approximation to a nonlinear diffusive wave, or thermal wave propagation. Other similarity solutions describing the initial stage of motion of the flow formed by the collapse of a finite volume fluid are developed by analogy to the expansion of a gas cloud into a vacuum. For the case of a continuous discharge there is initially a starting jet flow followed by the buoyancydriven spreading flow. The jet mixing zone in such flows is described using Prandtl's mixing length theory. Dimensional analysis is used to derive the relevant scaling factors describing these flows.
Item Type:  Report or Paper (Technical Report) 

Group:  W. M. Keck Laboratory of Hydraulics and Water Resources 
Record Number:  CaltechKHR:KHR40 
Persistent URL:  http://resolver.caltech.edu/CaltechKHR:KHR40 
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ID Code:  25964 
Collection:  CaltechKHR 
Deposited By:  Imported from CaltechKHR 
Deposited On:  30 Apr 2004 
Last Modified:  26 Dec 2012 13:50 
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