Claims
- 1. A device for producing a laminar glass rodlike output stream of sufficient velocity for use in water displays comprising:
- an enclosure means having an inlet port and an outlet orifice and defining a flow path between said inlet port and said outlet orifice, said outlet orifice having a flow area which is no more than a small fraction of the area of the flow path within said enclosure means and being a substantially sharp edge orifice constituting a step reduction in flow area from the area of the
- flow path within said enclosure means said enclosure means being a means for containing a volume of fluid under pressure for producing said output stream;
- turbulence reducing means disposed within said enclosure means between said inlet port and said outlet orifice, said turbulence reducing means being a means for defining a large plurality of small area flow paths across the flow area between said inlet port and said outlet orifice for reducing rotational flow and turbulence in said enclosure means and for developing laminar flow in said enclosure means by reducing the Reynolds number of the flow of said fluid within said enclosure means;
- means for removing any air from said enclosure means and said turbulence reducing means;
- said inlet port for introducing said fluid to said enclosure means being mounted substantially tangentially to said enclosure means such that said fluid is introduced to said enclosure means substantially tangential to said enclosure means for subsequent passage through said enclosure means and out said outlet orifice.
- 2. The device of claim 1 wherein said enclosure means comprises a cylindrical tank.
- 3. The device of claim 2 wherein said outlet orifice consists of an orifice in one end wall of said tank and substantially concentric therewith.
- 4. The device of claim 3 wherein said inlet port is adjacent the end wall opposite said orifice.
- 5. The device of claim 1 wherein said turbulence reducing means comprises an open cell foam member and a flow straightening member having a plurality of straight and parallel flow passages therethrough.
- 6. The device of claim 5 wherein said porous foam member is disposed in said enclosure to receive flow progressing from said inlet port for passage therethrough, said flow straightening member being positioned between said foam member and said outlet orifice.
- 7. A device for producing a laminar glass rod-like output stream of sufficient velocity for use in water displays comprising:
- a cylindrical enclosure means having first and second ends, and having an inlet port adjacent said first end and an outlet orifice in said second end, and defining a flow path between said inlet port and said outlet orifice, said outlet orifice having a flow area which is no more than a small fraction of the area of the flow path within said enclosure means and being a substantially sharp edge orifice constituting a step reduction in flow area from the area of the flow path within said enclosure means, said enclosure means being a means for containing a volume of fluid under pressure for producing said output stream;
- turbulence reducing means disposed within said enclosure means between said inlet port and said outlet orifice, said turbulence reducing means being a means for defining a large plurality of small area flow paths in the flow area between said inlet port and said outlet orifice for reducing rotational flow and turbulence in said enclosure means and for developing laminar flow in said enclosure means by reducing the Reynolds number of the flow of said fluid within said enclosure means;
- means for removing any air from said enclosure means and said turbulence reducing means; and
- said inlet port for introducing said fluid to said enclosure means enclosure means being mounted substantially tangentially to said enclosure means such that said fluid is introduced to said enclosure means substantially tangential to said enclosure means for subsequent passage through said enclosure means and out said outlet orifice.
- 8. The device of claim 7 wherein said outlet orifice is substantially concentric with said cylindrical enclosure
- 9. The device of claim 8 wherein said turbulence reducing means comprises an open cell foam member and a flow straightening member having a plurality of straight and parallel flow passages therethrough.
- 10. The device of claim 9 wherein said porous foam member is disposed in said enclosure to receive flow progressing from said inlet port for passage therethrough, said flow straightening member being positioned between said foam member and said outlet orifice.
- 11. A method of producing a laminar stream comprising the steps of
- (a) providing an enclosure means having an inlet port and an outlet orifice and defining a flow path between said inlet port and said outlet orifice, said outlet orifice having a flow area which is no more than a small fraction of the area of the flow path within said enclosure means and being a substantially sharp edge orifice constituting a step reduction in flow area from the area of the flow path within said enclosure means, said enclosure means being a means for containing a volume of fluid under pressure for producing the output stream;
- (b) providing turbulence reducing means disposed within the holding means between the inlet port and the outlet orifice, the turbulence reducing means being a means for defining a large plurality of small area flow paths across the flow area between the inlet port and the outlet orifice for reducing rotational flow and turbulence in the enclosure means for developing laminar flow in the enclosure means by reducing the Reynolds number of the flow of the fluid within the enclosure means;
- (c) removing all air from the enclosure means and the turbulence reducing means; and
- (d) pressurizing the enclosure means by introducing fluid through an inlet port to the enclosure means substantially tangentially to the enclosure means for subsequent passage through the enclosure means and out the outlet orifice.
Parent Case Info
This is a continuation of application Ser. No. 06/800,224, filed 11/25/85 now abandoned.
US Referenced Citations (8)
Continuations (1)
|
Number |
Date |
Country |
Parent |
800224 |
Nov 1985 |
|