Datenpaket: Database: Ridge-type roughness - from turbulent channel flow to internal combustion engine

Database: Ridge-Type Roughness - From Turbulent Channel Flow to Internal Combustion Engine

This database provides the data presented in the manuscript "Ridge-type roughness – from turbulent channel flow to internal combustion engine". (DOI:10.1007/s00348-021-03353-x) It features experimental and numerical data on two ridge-type geometries specified in figures 1 and 2. The data is provided as .dat files separated for geometries (trapezoidal grooves, rectangular grooves) and for the individual data sources (DNS, PTV, HW, dPdx, PIV). An overview of all provided files is given in table 1. The nomenclature stated in table 1 is the same as introduced in the manuscript in table 1. figure 1: trapezoidal grooves

      _____s_____
     /\         /\   |
    /  \       /  \  |h
___/    \_____/    \_|___

| ID | flow type | s/δ | h/δ | tip angle[°] | |-----------------------------------------------|--------------|--------|---------|----------------| | trixx | channel | 2.16 | 0.158 | 54.8 | | trixx | engine | 1.52 | 0.376 | 65 |

figure 2: rectangular grooves

  _______s______ 
    ____         ____
   |    |       |    | 
   |    |       |    | h
___|    |_______|    |_____
   __w__

| ID | flow type | s/δ | h/δ | w/δ | |-----------------------------------------------|--------------|---------|--------|---------| | rectxx | channel | 1.22 | 0.078 | 0.238 | | rectxx | engine | 1.12 | 0.174 | 0.562 |

table 1: database case overview | filename | flow type | data source | Reb | Quantities stored | |------------------------------|--------------|-----------------|-----------------|----------------------------------------------------| | | | | | | | refpiston.dat | engine | PTV | 15000 | y,y/d99,z,z/d99,U,V,U/U0,(V-V0)/U0 | | refdns.dat | channel | DNS | 18000 | y/delta,U/U0,uu/U0^2,vv/U0^2, | | | | | | ww/U0^2,uv/U0^2 |
| | | | | |
| tridpdx.dat | channel | dPdx | 5000-85000 | Reb, Retau, Cf | | trihw12.dat | channel | HW | 12000 | z/delta,y/delta,U/U0 | | trihw18.dat | channel | HW | 17900 | y/delta,z/delta,U/U0,urms/U0 | | trihw37.dat | channel | HW | 37500 | z/delta,y/delta,U/U0 | | trihw58.dat | channel | HW | 58200 | z/delta,y/delta,U/U0 | | tridns.dat | channel | DNS | 18000 | y/delta,z/delta,U/U0,V/U0,W/U0, | | | | | | uu/U0^2,vv/U0^2,ww/U0^2,uv/U0^2, |
| | | | | uw/U0^2,vw/U0^2 | | trispiv.dat | channel | sPIV | 18000 | y,z,U,V,W | | tripiston.dat | engine | PTV | 15000 | y,y/d99,z,z/d99,U,V,U/U0,(V-V0)/U0 | | | | | | | | rectdpdx.dat | channel | dPdx | 5000-85000 | Reb, Retau, Cf | | recthw.dat | channel | HW | 18000 | y/delta,z/delta,U/U0,urms/U0 | | rectdns.dat | channel | DNS | 18000 | y/delta,z/delta,U/U0,V/U0,W/U0, | | | | | | uu/U0^2,vv/U0^2,ww/U0^2,uv/U0^2, | | | | | | uw/U0^2,vw/U0^2 | | rectpiston.dat | engine | PTV | 15000 | y,y/d99,z,z/d99,U,V,U/U0,(V-V0)/U0 |

PTV: particle tracking velocimetry DNS: direct numerical simulation dPdx: pressure-drop measuremts HW: hot-wire measurements sPIV: stereoscopic particle image velocimetry

                                                lars.deyn@kit.edu