Development of a fundamental model of hypergolic ignition in space-ambient engines.

AIAA Journal ◽  
1967 ◽  
Vol 5 (9) ◽  
pp. 1616-1624 ◽  
Author(s):  
VITO D. AGOSTA ◽  
THOMAS F. SEAMANS ◽  
MARCEL VANPEE
Keyword(s):  
Fundamental Model

Dissecting transmetalation reactions at the molecular level: C–B versus F–B bond activation in phenyltrifluoroborate silver complexes

2021 ◽  
Vol 50 (4) ◽  
pp. 1496-1506
Author(s):  
Fiona Bathie ◽  
Adam W. E. Stewart ◽  
Allan J. Canty ◽  
Richard A. J. O'Hair
Keyword(s):  
Gas Phase ◽  
Bond Activation ◽  
Molecular Level ◽  
Silver Complexes ◽  
Fundamental Model ◽  
Model Reactions

Gas-phase experiments and computation provide fundamental model reactions for aryl and fluoride transfer between silver and boron centres.

A fundamental model of an industrial-scale jaw crusher

2017 ◽  
Vol 105 ◽  
pp. 69-78 ◽  
Author(s):  
Marcus Johansson ◽  
Magnus Bengtsson ◽  
Magnus Evertsson ◽  
Erik Hulthén
Keyword(s):  
Industrial Scale ◽  
Jaw Crusher ◽  
Fundamental Model

Prediction of soot formation rates: a new approach

1974 ◽  
Vol 338 (1614) ◽  
pp. 375-396 ◽  
Keyword(s):  
Soot Formation ◽  
Rocket Engine ◽  
Experimental Results ◽  
Intermediate Species ◽  
New Approach ◽  
Fundamental Model ◽  
Gas Reactions ◽  
Gaseous Hydrocarbons ◽  
Controlling Processes ◽  
Exhaust Jet

Five processes controlling the production of soot from gaseous hydrocarbons are distinguished: gas reactions producing radical fragments on which nucleation may begin; nucleation; coagulation; growth; and oxidation. A fundamental model capable of taking into account all these processes is described. The model is applied to the conditions of a practical rocket engine, in which production of soot in the exhaust jet is governed by the rate of pyrolysis of methane in the chamber. Predictions made for these conditions agree with experimental results. The rate controlling processes and key intermediate species are identified.

Crossing the Borders

2019 ◽  
pp. 173-190
Author(s):  
Sergio Casali
Keyword(s):  
Fundamental Model ◽  
Intertextual Dialogue

All of Mercury’s three interventions in the Aeneid are engaged in a profound intertextual dialogue with Homer and Apollonius. Mercury’s first visit to Carthage (Aen. 1.297–304) echoes Athena’s intervention at Od. 13.300–2, and also the only intervention of Hermes as messenger/emissary of Zeus in the Argonautica (Arg. 3.584–8). This suggests a parallelism between Dido and Aeetes that will resurface again at Aen. 4.563–4 and 604–6. Furthermore, Jupiter’s sending of Mercury to Carthage and the god’s flight recall both Zeus’ sending of Hermes to Ogygia in the Odyssey and Aphrodite’s sending of Eros to Aea. Vergil’s fundamental model for Jupiter’s dispatch of Mercury to Aeneas (Aen. 4.219–78) is Zeus’ dispatch of Hermes to Calypso to free Odysseus at Od. 5.28–42. Finally, Mercury’s dream apparition to Aeneas (Aen. 4.553–70) is modeled on Hermes’ second visit to Priam at Il. 24.677–95.

scholarly journals The Exact Groundwater Divide on Water Table between Two Rivers: A Fundamental Model Investigation

Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 685 ◽  
Author(s):  
Peng-Fei Han ◽  
Xu-Sheng Wang ◽  
Li Wan ◽  
Xiao-Wei Jiang ◽  
Fu-Sheng Hu
Keyword(s):  
Water Level ◽  
Water Table ◽  
Catchment Area ◽  
River Basins ◽  
Two Dimensional ◽  
Local Flow ◽  
Fundamental Model ◽  
Through Flow ◽  
Flow Systems ◽  
Pass Through

The groundwater divide within a plane has long been delineated as a water table ridge composed of the local top points of a water table. This definition has not been examined well for river basins. We developed a fundamental model of a two-dimensional unsaturated–saturated flow in a profile between two rivers. The exact groundwater divide can be identified from the boundary between two local flow systems and compared with the top of a water table. It is closer to the river of a higher water level than the top of a water table. The catchment area would be overestimated (up to ~50%) for a high river and underestimated (up to ~15%) for a low river by using the top of the water table. Furthermore, a pass-through flow from one river to another would be developed below two local flow systems when the groundwater divide is significantly close to a high river.

A Fundamental Model for Wormhole Formation Including Multiphase Flow

2020 ◽  
Author(s):  
Haoran Cheng ◽  
Mateus Palharini Schwalbert ◽  
A. Daniel Hill ◽  
Ding Zhu
Keyword(s):  
Multiphase Flow ◽  
Fundamental Model
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