Numerical Study on the Self-Pulsation Characteristics of LOX/GH₂ Swirl Coaxial Injector

Table 1

Geometrical parameters of the LOX/GH₂ swirl coaxial injector.

	Dimensionless parameters	Values
Inner injector		1
		13.15
		0.32
		0.34
		1.28
Outer injector		1.74
		0.32
		0.43
Recess region		0.43

Note: is the diameter of swirl chamber, i.e., the reference size; is the length of swirl chamber; is the diameter of tangential hole, the number of which is 4; is the swirl radius; is the outer diameter of inner injector; is the diameter of outer injector outlet; is the diameter of inlet hole, the number of which is row; is the distance between each row of inlet holes; is the recess length.