Lock, S and Coals, A and Gadian, A and Mobbs, S (2009) Exploring a cut-cell representation of terrain in a microscale model. In: Royal Meterorological Society Conference 2009, 29th June - 2nd July, 2009, University of Reading.
|PDF (Poster, RMetS 2009 conference) - Accepted Version|
Moves to increasingly high-resolution models give rise to more variations in the underlying orography being captured by the model grid. Consequently, high-resolution models must overcome instabilities associated with terrain-following approaches. This work further explores the capabilities of a cut-cell representation of orography for idealised orographically-forced and moist microscale flows. The model is based on terrain-intersecting coordinates and solves flow in the resulting cut-cells using a finite-volume approximation. The model has been designed for the purposes of very high-resolution simulations. Comparisons with benchmark orographic and moist test cases demonstrate very good results. Further tests show the potential for the cut-cell approach for stably resolving flows over very steep orography.
|Item Type:||Conference or Workshop Item (Poster)|
|Uncontrolled Keywords:||Numerical Weather Prediction; terrain-intersecting grid; orographic flow|
|Deposited By:||Dr S Lock|
|Deposited On:||07 Sep 2009 09:50|
|Last Modified:||07 Sep 2009 09:50|
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