公开(公告)号：US20150039268A1

公开(公告)日：2015-02-05

申请号：US14380322

申请日：2013-02-15

Applicant: TOHOKU UNIVERSITY

Inventor： Hitoshi Soyama

IPC: G01M99/00 ,  G06F17/17

CPC classification number: G01M11/30 ,  B05B1/00 ,  B05B15/18 ,  G06F17/17

Abstract: Equation (1) for calculating estimated cavitating jet performance E is set, a power index n(σ) of a term xn(σ) relating to a power law of an injection pressure p1 of a cavitating jet and a power index m(σ) of a term ym(σ) relating to a power law of a nozzle diameter d for producing the cavitating jet in Equation (1) are specified from data on the injection pressure p1, the nozzle diameter d and a cavitation number σ and data on cavitating jet performance ERmax corresponding to these pieces of data, and the estimated cavitating jet performance E is obtained using the data on the injection pressure p1, the nozzle diameter d and the cavitation number σ, the Equation (1) and the functions n(σ), m(σ) for the specified power indices.

Abstract translation: 用于计算估计的空化喷射性能E的等式（1）设定为与空化射流的喷射压力p1和功率指数m（...）有关的项xn（＆sgr）的幂指数n（＆sgr） 根据关于喷射压力p1，喷嘴直径d和空化数量＆sgr的数据，确定与等式（1）中产生空化射流的喷嘴直径d的幂定律有关的术语ym（＆sgr） ; 以及与这些数据对应的空化喷射性能ERmax的数据，并且使用关于喷射压力p1，喷嘴直径d和空化数量＆sgr的数据获得估计的空化喷射性能E，等式（1）和 函数n（＆sgr;），m（＆sgr））用于指定的幂指数。

公开(公告)号：US20240001509A1

公开(公告)日：2024-01-04

申请号：US17856934

申请日：2022-07-01

Applicant: The Boeing Company ,  Tohoku University

Inventor： Kandaudage Channa Ruwan De Silva ,  Daniel Gordon Sanders ,  John K. Shimabukuro ,  Hitoshi Soyama

IPC: B24C5/04 ,  B24C9/00

CPC classification number: B24C5/04 ,  B24C9/00

Abstract: A cavitation nozzle is disclosed, including a plate, a hollow body, and a cap removably engaged with the hollow body and holding the plate against a distal end of the hollow body. The plate may have a central aperture and a distal surface, wherein the distal surface is bisected by a groove and the hollow body is configured to deliver high pressure fluid through the central aperture. The delivered high pressure fluid may be discharged as a cavitating jet.

公开(公告)号：US20140378947A1

公开(公告)日：2014-12-25

申请号：US14378141

申请日：2013-02-14

Applicant: TOHOKU UNIVERSITY ,  SHOWA UNIVERSITY

Inventor： Hitoshi Soyama ,  Katsunori Ami ,  Matsuo Yamamoto

IPC: A61M3/02 ,  A61B1/12

CPC classification number: A61M3/0279 ,  A61B1/126 ,  A61C17/02 ,  A61M3/0216 ,  A61M3/0233 ,  A61M3/0258 ,  A61M2210/1053

Abstract: A water jet spray nozzle has a flow path including, from the upstream side to the end of the flow path, a small-diameter portion having a small inside diameter, an expanded portion having a larger inside diameter than the small-diameter portion, and a jet orifice having a smaller inside diameter than the expanded portion. The water jet spray nozzle is configured such that water passing through the flow path with a pressure of 0.2 to 0.6 MPa is retained in the expanded portion to as to generate cavitation bubbles from the small-diameter portion to the expanded portion. The inside diameter of the small-diameter portion § is 0.5 to 0.7 mm while the inside diameter of the jet orifice is 1 to 1.3 times larger than that of the small-diameter portion.

Abstract translation: 喷水喷嘴具有包括从流路的上游侧到端部的具有小内径的小直径部分，具有比小直径部分更大的内径的扩张部分的流路，以及 具有比扩展部分更小的内径的喷射孔。 喷水喷嘴被配置为使得通过流动路径的水的压力为0.2-0.6MPa被保留在膨胀部分中以便从小直径部分到膨胀部分产生空化气泡。 小直径部分§的内径为0.5至0.7mm，而喷射孔的内径比小直径部分的内径大1至1.3倍。