The critical heat flux occurring during upflow of boiling water in vertical smooth and porous-coated tubes were investigated experimentally. experiments performed at low pressures from 0.11-0.7 MPa mass fluxes 100-400 kg/m2s, with inlet subcoolings 1-70 K. carried out four test sections, two which porous coated by sintering. each the cases, smooth, had same geometries (L/D = 28.3, L/D 38.75) to...

In this paper, modeling of high speed projectiles with different nose shapes, penetrating into steel fiber reinforced concrete is investigated. This is a novel study because it considers the length to diameter ratio of steel fiber as well as projectile length to diameter ratio and volume fraction of fiber used in concrete matrix on the impact resistance of steel fiber reinforced concrete fibers...

The combustion characteristics of a hydrogen-fueled supersonic combustor featuring large cavity length-to-depth ratio (i.e., 11) were examined by performing experimental trials while varying the fuel injector positions and equivalence ratios. During these trials, flame chemiluminescence images acquired simultaneously from side bottom under Mach 2.0 inflow conditions. was observed to stabilize i...