Changes between Version 17 and Version 18 of doc/app/nesting_parameters


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Timestamp:
Jan 30, 2019 1:32:15 PM (6 years ago)
Author:
hellstea
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  • doc/app/nesting_parameters

    v17 v18  
    3434   END TYPE pmc_layout
    3535}}}
    36 {{{name}}} is the domain name given by the user. {{{id}}} is the number of the domain (can be arbitrarily chosen, but it would be good practise to number the domains in ascending order starting with 1), while {{{parent_id}}} gives the number of the domain in which this domain is embedded. The so-called ''root''-domain which includes all other ''nested''-domains should have the id 1. The ''root''-domain has no ''parent''-domain and must be given ''-1'' as its {{{parent_id}}}. {{{npe_total}}} is the number of PEs to be used for this domain. {{{lower_left_x}}} and {{{lower_left_y}}} are the coordinates in m of the south-left corner of the domain given in the root-model coordinate system. More precisely, {{{lower_left_x}}} is measured from the u-node at i=0 and {{{lower_left_y}}} from the v-node at j=0. The ''root''-domain has {{{lower_left_x}}} = ''0.0'' and {{{lower_left_y}}} = ''0.0''. A ''nested''-domain must be completely embedded in its ''parent''-domain and there has to be a clearance between the lateral nest boundaries and its parent boundaries. This clearance has to be at least four parent-grid cells in case of Wicker-Skamarock advection scheme and at least two parent-grid cells in case of Piaseck-Williams advection scheme. Possible parallel nests, including their ghost-cell layers, are not allowed to overlap. \\\\
     36{{{name}}} is the domain name given by the user. {{{id}}} is the number of the domain (can be arbitrarily chosen, but it would be good practise to number the domains in ascending order starting with 1), while {{{parent_id}}} gives the number of the domain in which this domain is embedded. The so-called ''root''-domain which includes all other ''nested''-domains should have the id 1. The ''root''-domain has no ''parent''-domain and must be given ''-1'' as its {{{parent_id}}}. {{{npe_total}}} is the number of PEs to be used for this domain. {{{lower_left_x}}} and {{{lower_left_y}}} are the coordinates in m of the south-left corner of the domain given in the root-model coordinate system. More precisely, {{{lower_left_x}}} is measured from the u-node at i=0 and {{{lower_left_y}}} from the v-node at j=0. The ''root''-domain has {{{lower_left_x}}} = ''0.0'' and {{{lower_left_y}}} = ''0.0''. Note that {{{lower_left_x}}} must be integer divisible by the parent grid dx and similarly {{{lower_left_y}}} by the parent grid dy. A ''nested''-domain must be completely embedded in its ''parent''-domain and there has to be a clearance between the lateral nest boundaries and its parent boundaries. This clearance has to be at least four parent-grid cells in case of Wicker-Skamarock advection scheme and at least two parent-grid cells in case of Piaseck-Williams advection scheme. Possible parallel nests, including their ghost-cell layers, are not allowed to overlap. \\\\
    3737The following gives an example for defining a single nested-domain embedded in a root-domain:
    3838{{{