#include <ERF_InputSpongeData.H>

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Public Member Functions
	InputSpongeData ()
	Construct input sponge metadata from the ERF input namespace. More...

void	read_from_file (const amrex::Geometry &geom, const amrex::Vector< amrex::Real > &zlevels_stag)
	Read and interpolate the input sponge profile onto level-0 heights. More...

int	size () const
	Return the number of interpolated input sponge samples. More...

Public Attributes
std::string	input_sponge_file = "input_sponge_file.txt"
	Path to the text file containing the sponge profile. More...

amrex::Vector< amrex::Real >	z_inp_sponge
	Interpolated sponge profile heights [m]. More...

amrex::Vector< amrex::Real >	U_inp_sponge
	Interpolated target x velocity for sponge damping. More...

amrex::Vector< amrex::Real >	V_inp_sponge
	Interpolated target y velocity for sponge damping. More...

Detailed Description

Data structure storing input sponge data. Also handles reading the input file for sponge data

Constructor & Destructor Documentation

◆ InputSpongeData()

InputSpongeData::InputSpongeData ( )

inline

Construct input sponge metadata from the ERF input namespace.

     {
         // Text input_sounding file
         amrex::ParmParse pp("erf");
         pp.queryAdd("input_sponge_file", input_sponge_file);
     }

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Member Function Documentation

◆ read_from_file()

void InputSpongeData::read_from_file	(	const amrex::Geometry &	geom,
		const amrex::Vector< amrex::Real > &	zlevels_stag
	)

inline

Read and interpolate the input sponge profile onto level-0 heights.

Parameters

geom	Geometry defining the level-0 vertical domain.
zlevels_stag	Staggered vertical coordinates used for interpolation.

     {
         const int klo = 0;
         const int khi = geom.Domain().bigEnd()[AMREX_SPACEDIM-1];
         const int Nz = geom.Domain().size()[AMREX_SPACEDIM-1];
  
         const amrex::Real zbot = zlevels_stag[klo];
         const amrex::Real ztop = zlevels_stag[khi+1];
  
         z_inp_sponge.resize(Nz+2);
         U_inp_sponge.resize(Nz+2);
         V_inp_sponge.resize(Nz+2);
  
         // Read the input_sponge file
         amrex::Print() << "input_sponge file location : " << input_sponge_file << std::endl;
         std::ifstream input_sponge_reader(input_sponge_file);
         if(!input_sponge_reader.is_open()) {
             amrex::Error("Error opening the input_sponge file.\n");
         }
         else {
             // Read the contents of the input_sponge file
             amrex::Print() << "Successfully opened the input_sponge file. Now reading... " << std::endl;
             std::string line;
  
             // First, read the input data into temp vectors; then, interpolate vectors to the
             // domain lo/hi and cell centers (from level 0)
             amrex::Vector<amrex::Real> z_inp_sponge_tmp, U_inp_sponge_tmp, V_inp_sponge_tmp;
  
             // Add surface
             z_inp_sponge_tmp.push_back(zbot); // height above sea level [m]
             U_inp_sponge_tmp.push_back(0);
             V_inp_sponge_tmp.push_back(0);
  
             // Read the vertical profile at each given height
             amrex::Real z, U, V;
             int line_no = 0;
             while(std::getline(input_sponge_reader, line)) {
                 ++line_no;
                 // Blank lines and lines starting with '#' are not data
                 const auto first = line.find_first_not_of(" \t\r");
                 if (first == std::string::npos || line[first] == '#') { continue; }
                 std::istringstream iss_z(line);
                 if (!(iss_z >> z >> U >> V)) {
                     amrex::Abort("input_sponge file " + input_sponge_file + ", line " +
                                  std::to_string(line_no) + ": expected three numbers (z U V)");
                 }
                 if (z == zbot) {
                     U_inp_sponge_tmp[0] = U;
                     V_inp_sponge_tmp[0] = V;
                 } else {
                     AMREX_ALWAYS_ASSERT(z > z_inp_sponge_tmp[z_inp_sponge_tmp.size()-1]); // sounding is increasing in height
                     z_inp_sponge_tmp.push_back(z);
                     U_inp_sponge_tmp.push_back(U);
                     V_inp_sponge_tmp.push_back(V);
                     if (z >= ztop) break;
                 }
             }
  
             // At this point, we have an input_sponge from zbot up to
             // z_inp_sponge_tmp[N-1] >= ztop. Now, interpolate to grid level 0 heights
             const int Ninp = z_inp_sponge_tmp.size();
             z_inp_sponge[0]     = zbot;
             U_inp_sponge[0]     = U_inp_sponge_tmp[0];
             V_inp_sponge[0]     = V_inp_sponge_tmp[0];
             for (int k=0; k < Nz; ++k) {
                 z_inp_sponge[k+1] = myhalf * (zlevels_stag[k] + zlevels_stag[k+1]);
                 U_inp_sponge[k+1] = interpolate_1d(z_inp_sponge_tmp.dataPtr(), U_inp_sponge_tmp.dataPtr(), z_inp_sponge[k+1], Ninp);
                 V_inp_sponge[k+1] = interpolate_1d(z_inp_sponge_tmp.dataPtr(), V_inp_sponge_tmp.dataPtr(), z_inp_sponge[k+1], Ninp);
             }
             z_inp_sponge[Nz+1]     = ztop;
             U_inp_sponge[Nz+1] = interpolate_1d(z_inp_sponge_tmp.dataPtr(), U_inp_sponge_tmp.dataPtr(), ztop, Ninp);
             V_inp_sponge[Nz+1] = interpolate_1d(z_inp_sponge_tmp.dataPtr(), V_inp_sponge_tmp.dataPtr(), ztop, Ninp);
         }
  
         amrex::Print() << "Successfully read the input_sponge file..." << std::endl;
         input_sponge_reader.close();
     }

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◆ size()

int InputSpongeData::size ( ) const

inline

Return the number of interpolated input sponge samples.

Returns: Number of stored sponge profile levels.

     {
         AMREX_ALWAYS_ASSERT(z_inp_sponge.size() == U_inp_sponge.size());
         AMREX_ALWAYS_ASSERT(z_inp_sponge.size() == V_inp_sponge.size());
         return z_inp_sponge.size();
     }