Simulation Study on Dynamics of Hydraulic Turbines Used in Drilling Engineering

Table 1

Basic parameters of downhole turbine.

Parameter	Value
Leading edge radius r1	0.8 mm
Trailing edge radius r2	0.4 mm
Axial height H	22.5 mm
Installation angle	40°
Chord B	28.72 mm
Maximum thickness a/B	0.4
Center line of blade profile Ln	22.28 mm
Blade front cone angle	14°
Blade back cone angle	12°
Relative pitch	0.75