Design of Gravity Assist trajectory from Earth to Jupiter

Ammar, M. K.; Oda, D. A.

doi:10.21042/amns.2018.1.00011

Cited by 10 publications

(6 citation statements)

References 4 publications

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“…At low flow velocity, the roughness has a great impact on the flow pattern, so the total amount of crystallization attached to the villi is relatively small . [19][20][21] With the increase of flow velocity, the influence of roughness on the flow pattern disturbance is gradually weakened. [22][23][24][25][26] When the flow velocity exceeds the threshold of 5.46 cm/s, the flow action overcomes the influence of roughness on the flow pattern and then reduces the crystallization attached to the villi.…”

Section: Total Amount Of Crystallization On Transverse Flocking Dramentioning

confidence: 99%

Experimental study on anti‐crystallization law of tunnel transverse flocking drainpipe at different velocities

Liu

Gao

Zhang

et al. 2020

Asia-Pacific J Chem Eng

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With the increasing of the tunnel operation life, various diseases of the tunnel are gradually highlighted, especially the lining cracking and leakage caused by the crystal blocking pipe of the drainage system, which brings serious hidden trouble to the safe operation of the tunnel. In order to solve the problem of crystal plugging of horizontal drainage pipe in tunnel, the transverse drainage pipe of the tunnel was taken as the research object, combined with the field survey data, and the indoor test was used to analyze the anti‐crystallization law of flocking drainage pipe at different velocities. The results showed that the flocking drainage pipes had an anti‐crystallization effect, and the anti‐crystallization efficiency could be increased by more than 50% compared with the ordinary drainage pipes, and the flow rate at 6.82 cm/s could reach more than 60%. At the flow rate of 5.46 cm/s, the crystallization on flocking drainage pipes at the later stage of the test remained basically unchanged and was less than that on ordinary drainage pipes. The change in the weight of crystals on the flocking drainage pipes was approximately sinusoidal, and the change period was different at different flow rates; among which, the change period of crystallization on the flocking drainpipe was shorter when the villi length was shorter at low flow rates.

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Section: Total Amount Of Crystallization On Transverse Flocking Dramentioning

confidence: 99%

Experimental study on anti‐crystallization law of tunnel transverse flocking drainpipe at different velocities

Liu

Gao

Zhang

et al. 2020

Asia-Pacific J Chem Eng

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“…All in all, many studies have been conducted to investigate the effects of hole shape and hole inclination angle on the film cooling performance [23][24][25]. However, few efforts were devoted to reveal the influence of the forward expansion angle of the shaped hole on the flow and cooling characteristics.…”

Section: Introductionmentioning

confidence: 99%

Effect of forward expansion angle on film cooling characteristics of shaped holes

Zhang

Lin

et al. 2020

Open Physics

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According to the design requirements of high-temperature combustion chamber, an advanced shaped hole structure was designed for film cooling. Numerical method was applied in this study to investigate the flow and heat transfer characteristics of shaped holes and compared with those of cylindrical holes. The influence of the forward expansion angle of shaped holes on the flow and heat transfer was studied. The results show that compared to cylindrical holes, the diffused structure of shaped holes decreases the momentum of jet flow, improves the adhesion characteristics of the cooling air film, increases the diffusion of the coolant air outflow and improves the cooling efficiency between adjacent columns of holes in the lateral direction. When the forward expansion angle increases, the expansion section induced the flow vortex, which reduces the radial velocity of coolant flow and enhances the diffusion of cooling air film both in streamwise and spanwise directions. However, as the forward expansion angle increases further, the scale of vortex inside the shaped hole grows. Too large vortex inside the shaped hole increases the coolant eject angle, which weakens the film covering effect. Additionally, the shaped hole results in an increase in lateral spreading and enhances the cooling effect between adjacent columns of the film hole. The enhancement of the film cooling characteristics is due to the change in the shape of the film hole, resulting in the enhancement of the flow vortex, which induces complicated secondary flow.

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“…We also found that this periodic pattern remains unchanged. It shows that the one-minute stock price fluctuation is deeply affected by the volatility of the stock price at the same time in the previous period, while it's not just the effect of the intraday model [22][23][24]. Therefore, the research perspective of investors should not only be limited to the closing price and open price of the stock market, but should also explore the intrinsic properties of the high-frequency data and make investment decisions with the the cyclical law of autocorrelation.…”

Section: Autocorrelation Analysis Of Volatilitymentioning

confidence: 98%

The Influence of Trading Volume, Market Trend, and Monetary Policy on Characteristics of the Chinese Stock Exchange: An Econophysics Perspective

2019

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The paper adopts the financial physics approach to investigate influence of trading volume, market trend, as well as monetary policy on characteristics of the Chinese Stock Exchange. Utilizing 1-minute high-frequency data at various time intervals, the study examines the probability distribution density, autocorrelation and multi-fractal of the Shanghai Composite Index. Our study finds that the scale of trading volume, stock market trends, and monetary policy cycles all exert significant influences on micro characteristics of Shanghai Composite Index. More specifically, under the conditions of large trading volumes, loose monetary policies, and downward stock trends, the market possesses better fitting on Levy’s distribution, the volatility self-correlation is stronger, and multifractal trait is more salient. We hope our study could provide better guidance for investment decisions, and form the basis for policy formulation aiming for a healthy growth of the financial market.

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Design of Gravity Assist trajectory from Earth to Jupiter

Cited by 10 publications

References 4 publications

Experimental study on anti‐crystallization law of tunnel transverse flocking drainpipe at different velocities

Experimental study on anti‐crystallization law of tunnel transverse flocking drainpipe at different velocities

Effect of forward expansion angle on film cooling characteristics of shaped holes

The Influence of Trading Volume, Market Trend, and Monetary Policy on Characteristics of the Chinese Stock Exchange: An Econophysics Perspective

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