Publication Date:
2020-11-17
Description:
TWODEE-2 is a FORTRAN 90 code based on previous code (TWODEE). It is designed to solve the
shallow water equations for fluid depth, depth-averaged horizontal velocities and
depth-averaged fluid density. The shallow layer approach used by TWODEE-2 is a
compromise between the complexity of CFD models and the simpler integral models. It
can be used for forecasting gas dispersion near the ground and/or for hazard assessment
over complex terrains. The inputs to the model are topography, terrain roughness, wind
measurements from meteorological stations and gas flow rate from the ground sources.
Optionally the model can be coupled with the output of a meteorological processor
which generates a zero-divergence wind field incorporating terrain effects. Model
outputs are gas concentration, depth-averaged velocity, averaged cloud thickness and
dose. The model can be a useful tool for gas hazard assessment by evaluating where and
when lethal concentrations for humans and animals can be reached.
Description:
Published
Description:
667-674
Description:
6V. Pericolosità vulcanica e contributi alla stima del rischio
Description:
JCR Journal
Description:
reserved
Keywords:
Dense gas transport
;
Fortran code
;
Gas hazard
;
Computational model
;
04. Solid Earth::04.08. Volcanology::04.08.01. Gases
;
05. General::05.01. Computational geophysics::05.01.99. General or miscellaneous
;
05. General::05.08. Risk::05.08.01. Environmental risk
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
