LRE Turbopump Axial Helical Inducer & Deswirl Stator Hydrodynamics

Turbomachinery & Rocket Propulsion (CFD)PASS · 1.17%

Axial hydrodynamic thrust, meridional cascade acceleration, and stage pressure differential across a 3-blade helical rocket turbopump inducer (+34°) and 4-vane deswirl stator (−18°) operating on RP-1 kerosene.

Tolerance:: 5%

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Problem statement

Geometry: Annular turbopump duct Ø170 × 420 mm with conical meridional hub ramp (R = 30 to 42 mm), 3 pitched inducer hydrofoil blades (+34°, R = 22..76 mm), and 4 counter-pitched stator vanes (−18°, R = 34..78 mm).
Material: RP-1 Kerosene at 20 °C (rho = 800.0 kg/m³, mu = 1.60e-3 Pa·s).
Boundary conditions: Inlet velocity U = 14.0 m/s along +X (mass flow 252.35 kg/s), outlet gauge pressure 0 Pa, outer casing shroud slip symmetry, hub, inducer blades, and stator vanes viscous no-slip walls.
Measured quantity: Stage pressure differential Delta_p (target 2.220 MPa from cascade theory, computed 2.194 MPa) and axial hydrodynamic load Fx = 11.58 kN.

WebCAE Terminal

Paste these commands into the Terminal panel inside WebCAE. They use the same text DSL as the application; run one command per line:

units mm
import path="cfd_rocket_turbopump_inducer.step" format=step
mesh tet size=16
cfd fluid kerosene
cfd set mode=steady speed=14.0 turbulence=sst iterations=850 tol=1e-5 threads=8 intensity=5 multigrid=0 cfl=15.0
cfd inlet surface number 3 speed=14.0 intensity=0.05
cfd outlet surface number 2 pressure=0
cfd symmetry surface number 1
cfd wall surface number 4 monitor=on
cfd wall surface number 5 monitor=on
cfd wall surface number 6 monitor=on
cfd wall surface number 7 monitor=on
cfd wall surface number 8 monitor=on
cfd wall surface number 9 monitor=on
cfd wall surface number 10 monitor=on
cfd wall surface number 11 monitor=on
cfd wall surface number 12 monitor=on
cfd wall surface number 13 monitor=on
cfd wall surface number 14 monitor=on
cfd wall surface number 15 monitor=on
cfd wall surface number 16 monitor=on
cfd wall surface number 17 monitor=on
cfd wall surface number 18 monitor=on
cfd wall surface number 19 monitor=on
cfd wall surface number 20 monitor=on
cfd wall surface number 21 monitor=on
cfd wall surface number 22 monitor=on
cfd wall surface number 23 monitor=on
cfd wall surface number 24 monitor=on
cfd wall surface number 25 monitor=on
cfd wall surface number 26 monitor=on
cfd wall surface number 27 monitor=on
cfd wall surface number 28 monitor=on
cfd wall surface number 29 monitor=on
cfd wall surface number 30 monitor=on
cfd wall surface number 31 monitor=on
solve cfd

Results comparison

Reference value	2.220 MPa
Our result	2.194 MPa
Deviation	1.17%
Tolerance	5%
Status	PASS · 1.17%
Element family	Finite-volume CFD
Mesh details	3101 узлов, 12807 тет (Netgen P1 tet mesh, 3-лопастной шнек-индьюсер + 4-лопаточный статор ТНА ЖРД)

Updated: 2026-10-19 · WebCAE 0.2.0 · 54751b2e+dirty