- #1
fishflyguy
- 2
- 0
Hello all- First post.
I am curious if it is possible to create cavitation underwater with these specific criteria. I am basically using a venturi device that will be pulled underwater in saltwater. Is it possible to get the vapor pressure down low enough to boil water (make bubbles).
I have done some rudimentary calculations and I got some Reynolds number in the 132,000 range which would be quite turbulent flow.
Here are the parameters of my question:
Venturi inlet diameter is .7500 inches (cannot change this...hopefully)
Venturi throat is .0937 inches (3/32) in diameter. (this can diameter can change)
The total length of venturi device is 1" 3/8"
The Venturi will be operated at depths of 10 feet to 50 feet below the surface of salt water
The Venturi will be operated in salt water with a temperature of 5 degrees C to 20 degrees C
The Venturi device will be moving from 2-5 knots consistently underwater.
3 knots is 1.543 meters/ second
Venturi will be made of yellow brass.
Optimum bubble diameter would be between 1/8" to 1/4"
My two questions are:
1. can I make consistent bubbles underwater?
2. Specifically can I make NON-destructive cavitating bubbles with the above criteria?
I am curious if it is possible to create cavitation underwater with these specific criteria. I am basically using a venturi device that will be pulled underwater in saltwater. Is it possible to get the vapor pressure down low enough to boil water (make bubbles).
I have done some rudimentary calculations and I got some Reynolds number in the 132,000 range which would be quite turbulent flow.
Here are the parameters of my question:
Venturi inlet diameter is .7500 inches (cannot change this...hopefully)
Venturi throat is .0937 inches (3/32) in diameter. (this can diameter can change)
The total length of venturi device is 1" 3/8"
The Venturi will be operated at depths of 10 feet to 50 feet below the surface of salt water
The Venturi will be operated in salt water with a temperature of 5 degrees C to 20 degrees C
The Venturi device will be moving from 2-5 knots consistently underwater.
3 knots is 1.543 meters/ second
Venturi will be made of yellow brass.
Optimum bubble diameter would be between 1/8" to 1/4"
My two questions are:
1. can I make consistent bubbles underwater?
2. Specifically can I make NON-destructive cavitating bubbles with the above criteria?