2026-10-09T20:51:21Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34037007 2026-09-30T21:51:16Z category_26239 category_26611 item_type_2 month_year_09_2026

Supersonic jet impingement over crushed walnut shells Claudia Jimenez Cuesta (25030651) Aerospace engineering not elsewhere classified Multiphysics flows (incl. multiphase and reacting flows) Plume-Surface-Interaction Cratering Planetary erosion Retro-propulsion Plume impingement Martian environment <p dir="ltr"><b><u>Jet properties</u></b></p><p dir="ltr">Mach number: 5</p><p dir="ltr">Under-expansion ratio: 2.84</p><p dir="ltr">Nozzle pressure ratio: 1500</p><p dir="ltr">Ambient pressure: 800 Pa</p><p dir="ltr">Target mass flow: 8.6 g/s</p><p dir="ltr">Stagnation pressure: 12 bar</p><p dir="ltr">Exit diameter, De: 10 mm</p><p dir="ltr">Impingement height, h: 3De</p><p dir="ltr">Firing duration: 1 second</p><p><br></p><p dir="ltr"><b><u>Granular media properties</u></b></p><p dir="ltr">Crushed walnut shells</p><p dir="ltr">Particle diameter: < 150 microns</p><p dir="ltr">Bulk density: 640-800 kg/m3</p><p dir="ltr">Moisture content: 8.92% pm 0.32 %</p><p><br></p><p dir="ltr"><b><u>Imaging properties</u></b></p><p dir="ltr">Photron Mini AX100 with a Samyang 35 mm lens</p><p dir="ltr">1024x1024 px resolution</p><p dir="ltr">1.4 px/mm ratio</p><p dir="ltr">Acquiring frame rate 4000 pfs</p><p><br></p><p dir="ltr"><b><u>Facility properties</u></b></p><p dir="ltr">Vacuum chamber at the University of Glasgow</p><p dir="ltr">Test section: 12 m3</p><p dir="ltr">Total volume: 72 m3</p><p dir="ltr">Test date: September 2025</p><p><br></p> 2026-09-30T21:51:16Z Dataset Media 10.6084/m9.figshare.34037007.v3 https://figshare.com/articles/media/WAL_HD03/34037007 CC BY 4.0