Development of the tandem reciprocating magnetic regenerative refrigerator and numerical simulation for the dead volume effect

2013 ◽  
Vol 36 (6) ◽  
pp. 1741-1749 ◽  
Author(s):  
Inmyong Park ◽  
Youngkwon Kim ◽  
Sangkwon Jeong
Keyword(s):  
Numerical Simulation ◽  
Volume Effect ◽  
Dead Volume ◽  
The Dead

The dead volume effect on the elastic moduli measurements using the forced‐oscillation method

2021 ◽  
Author(s):  
V. Mikhaltsevitch ◽  
M. Lebedev ◽  
R. Chavez ◽  
M. Pervukhina ◽  
S. Glubokovskikh ◽  
...  
Keyword(s):  
Elastic Moduli ◽  
Forced Oscillation ◽  
Volume Effect ◽  
Dead Volume ◽  
The Dead ◽  
Oscillation Method

Oedometer tests of soft soil and attempt of their numerical simulation

2017 ◽  
Vol 32 (1) ◽  
pp. 46-49
Author(s):  
Patryk Juszkiewicz ◽  
Paweł Szypulski ◽  
Kamila Międlarz
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Soft Soil ◽  
Test Results ◽  
Strength Parameters ◽  
Vistula River ◽  
The Dead ◽  
Oedometer Tests ◽  
Element Method

For the purpose of this article, oedometer tests were performed on organic silt samples derived from the bottom of an excava¬tion made near the Dead Vistula River. Three independent oedometer tests, with required basic tests for them, were carried out on specimens made from the same sample. Based on the test results, compressibility characteristic, physical and strength parameters of organic silt were determined. Using finite element method, attempts of simulation oedometer tests and cali¬bration of compression parameters were made.

A New Way to Eliminate the Phenomenon of Trapping Oil in Gear Pumps

2014 ◽  
Vol 628 ◽  
pp. 181-185
Author(s):  
Guo Lai Yang ◽  
Ming Xue Li ◽  
Jian Zhong Wang ◽  
Da Yu Yin
Keyword(s):  
Service Life ◽  
Dead Volume ◽  
Gear Pump ◽  
Oil Absorption ◽  
Root Cause ◽  
Compression And Expansion ◽  
Gear Pumps ◽  
Working Performance ◽  
The Dead

The phenomenon of trapping oil is an inevitable result to ensure oil absorption cavity and oil exhaust cavity are not collude with each other. It directly affects the working performance and service life of the gear pump. This article through analyzing the root cause of it put forward a new way to using an external oil circuit to eliminate it. Adding such an external oil circuit to the gear pump, can make the dead volume linked to oil exhaust cavity when the dead volume is decreasing and make the dead volume linked to oil absorption cavity when the dead volume is increasing. This way eliminates the trapped oil compression and expansion, so as to achieve the purpose of thoroughly eliminate the phenomenon of trapping oil.

scholarly journals Numerical simulation and industrial practice of inclusion removal from molten steel by gas bottom-blowing in continuous casting tundish

2011 ◽  
Vol 47 (2) ◽  
pp. 137-147 ◽  
Author(s):  
Z. Meijie ◽  
G. Huazhi ◽  
H. Ao ◽  
Z. Hongxi ◽  
D. Chengji
Keyword(s):  
Numerical Simulation ◽  
Residence Time ◽  
Molten Steel ◽  
Volume Fraction ◽  
Dead Volume ◽  
Inclusion Removal ◽  
Industrial Practice ◽  
Bottom Blowing ◽  
Metallographic Images ◽  
Gas Blowing

Gas blowing at the bottom of tundish is an efficient metallurgy technique in clean steelmaking. In this paper, the removal of small size inclusions in the gas bottom-blowing tundish was studied by numerical simulation and industrial practice. The residence time distribution (RTD) of molten steel in the tundish was calculated by mathematical modeling. The content of small size inclusions in the slab was analyzed using a oxygen probing and metallographic images. The results show that the molten steel characteristics obviously change when applied gas bottom-blowing, the average residence time of molten steel in the tundish prolongs more than 100s and the dead volume fraction decreases about 5%. Therefore, the removal efficiency of small size inclusions greatly increases because of bubbles attachment and long moving path. Industrial experiment results show that the average inclusions content of less than 20?m decreases more than 24%, the average overall oxygen content decreases about 15% when controlling the reasonable blowing parameters.

Sign in / Sign up

Export Citation Format

Share Document