Abstract
A pressure wave propagating in a tube often changes to a shock wave because of the nonlinear effect of the fluid it is traveling through. The purpose of this study is to establish a practical analytical model to analyze this phenomenon. In the first report, a concentrated mass model was proposed to analyze a nonlinear pressure wave phenomenon in a straight cylindrical tube. In this paper, the modeling of an enlargement and a contraction is proposed. The model at the enlargement and the contraction consists of masses, nonlinear pressure elements, base support dampers, and nonlinear dampers. The nonlinear damper is derived from pressure loss at the enlargement and the contraction. To confirm the validity of the proposed model, an experiment on a sound tube with an expansion-chamber muffler is performed and the experimental result is compared with the numerical result obtained by the concentrated mass model. The numerical computational result agrees very well with the experimental result. Therefore, it is concluded that the proposed enlargement and contraction model is valid for the numerical analysis of nonlinear pressure wave problem in a tube with an expansion-chamber muffler.
| Original language | English |
|---|---|
| Pages (from-to) | 800-808 |
| Number of pages | 9 |
| Journal | Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C |
| Volume | 76 |
| Issue number | 764 |
| DOIs | |
| Publication status | Published - Jan 1 2010 |
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All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering
Cite this
Nonlinear pressure wave analysis by concentrated mass model (3rd report, modeling of enlargement and contraction element). / Ishikawa, Satoshi; Kondou, Takahiro; Matsuzaki, Kenichiro.
In: Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, Vol. 76, No. 764, 01.01.2010, p. 800-808.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Nonlinear pressure wave analysis by concentrated mass model (3rd report, modeling of enlargement and contraction element)
AU - Ishikawa, Satoshi
AU - Kondou, Takahiro
AU - Matsuzaki, Kenichiro
PY - 2010/1/1
Y1 - 2010/1/1
N2 - A pressure wave propagating in a tube often changes to a shock wave because of the nonlinear effect of the fluid it is traveling through. The purpose of this study is to establish a practical analytical model to analyze this phenomenon. In the first report, a concentrated mass model was proposed to analyze a nonlinear pressure wave phenomenon in a straight cylindrical tube. In this paper, the modeling of an enlargement and a contraction is proposed. The model at the enlargement and the contraction consists of masses, nonlinear pressure elements, base support dampers, and nonlinear dampers. The nonlinear damper is derived from pressure loss at the enlargement and the contraction. To confirm the validity of the proposed model, an experiment on a sound tube with an expansion-chamber muffler is performed and the experimental result is compared with the numerical result obtained by the concentrated mass model. The numerical computational result agrees very well with the experimental result. Therefore, it is concluded that the proposed enlargement and contraction model is valid for the numerical analysis of nonlinear pressure wave problem in a tube with an expansion-chamber muffler.
AB - A pressure wave propagating in a tube often changes to a shock wave because of the nonlinear effect of the fluid it is traveling through. The purpose of this study is to establish a practical analytical model to analyze this phenomenon. In the first report, a concentrated mass model was proposed to analyze a nonlinear pressure wave phenomenon in a straight cylindrical tube. In this paper, the modeling of an enlargement and a contraction is proposed. The model at the enlargement and the contraction consists of masses, nonlinear pressure elements, base support dampers, and nonlinear dampers. The nonlinear damper is derived from pressure loss at the enlargement and the contraction. To confirm the validity of the proposed model, an experiment on a sound tube with an expansion-chamber muffler is performed and the experimental result is compared with the numerical result obtained by the concentrated mass model. The numerical computational result agrees very well with the experimental result. Therefore, it is concluded that the proposed enlargement and contraction model is valid for the numerical analysis of nonlinear pressure wave problem in a tube with an expansion-chamber muffler.
UR - http://www.scopus.com/inward/record.url?scp=77954699841&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77954699841&partnerID=8YFLogxK
U2 - 10.1299/kikaic.76.800
DO - 10.1299/kikaic.76.800
M3 - Article
AN - SCOPUS:77954699841
VL - 76
SP - 800
EP - 808
JO - Nippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
JF - Nippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
SN - 0387-5024
IS - 764
ER -