Philip Hancock

Dr Philip Hancock


Emeritus Reader in Fluid Mechanics
+44 (0)1483 689625
11 AB 02

Academic and research departments

Department of Mechanical Engineering Sciences.

Research

Research interests

My publications

Publications

This work was presented at WESC 2019 in Cork.

Philip E Hancock, Paul Hayden (2020)Wind-Tunnel Simulation of Stable Atmospheric Boundary Layers with an Overlying Inversion, In: Boundary-layer Meteorology175(1)pp. 93-112 Springer

Four cases of an overlying inversion imposed on a stable boundary layer are investigated, extending the earlier work of Hancock and Hayden (Boundary-Layer Meteorol 168:29–57, 2018), where no inversion was imposed. The inversion is imposed to one or other of two depths within the layer: midway or deep. Four cases of changed surface condition are also investigated, and it is seen that the surface and imposed conditions behave independently. A change of imposed inversion condition leaves the bottom 1/3 of the layer almost completely unaffected; a change of the surface condition leaves the top 2/3 unaffected. Comparisons are made against two sets of local-scaling systems over the full height of the boundary layer. Both show some influence of the inversion condition. The surface heat flux and the reduction in surface shear stress, and hence the ratio of the boundary-layer height to surface Obukhov length, are determined by the temperature difference across the surface layer (not the whole layer), bringing all cases together in single correlations as functions of a surface-layer bulk Richardson number.