Dynamics of lava flow - Thickness growth characteristics of steady two-dimensional flow

Details Dynamics of lava flow - Thickness growth characteristics of steady two-dimensional flow Dynamics of lava flow - Thickness growth characteristics of steady two-dimensional flow

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984georl..11..641p&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 11, July 1984, p. 641-644. Research supported by Iowa State University and N

Physics

Fluid Dynamics

20

Fluid Dynamics, Geophysical Fluids, Lava, Steady Flow, Flow Velocity, Plastic Flow, Thickness, Two Dimensional Flow, Two Dimensional Models, Velocity Distribution, Yield Strength

Scientific paper

The thickness growth characteristics of flowing lava are investigated using a heat balance model and a two-dimensional model for flow of a Bingham plastic fluid down an inclined plane. It is found that yield strength plays a crucial role in the thickening of a lava flow of given flow rate. To illustrate this point, downstream thickness profiles and yield strength distributions were calculated for flows with mass flow rates of 10,000 and 100,000 kg/m-sec. Higher flow rates led to slow cooling rates which resulted in slow rate of increase of yield strength and thus greater flow lengths.

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