Results 31 to 40 of about 14,664 (244)

Entropy production and multiple equilibria: the case of the ice-albedo feedback [PDF]

open access: yes, 2010
Nonlinear feedbacks in the Earth System provide mechanisms that can prove very useful in understanding complex dynamics with relatively simple concepts. For example, the temperature and the ice cover of the planet are linked in a positive feedback which ...
Dubrulle, Bérengère   +2 more
core   +5 more sources

Progress in thermal energy storage technologies for achieving carbon neutrality

open access: yesCarbon Neutrality, 2023
China is committed to the targets of achieving peak CO2 emissions around 2030 and realizing carbon neutrality around 2060. To realize carbon neutrality, people are seeking to replace fossil fuel with renewable energy. Thermal energy storage is the key to
Changying Zhao   +4 more
doaj   +1 more source

Vortex rope patterns at different load of hydro turbine model

open access: yesMATEC Web of Conferences, 2017
Operation of hydraulic turbines beyond optimal conditions leads to formation of precessing vortex core in a draft tube that generates powerful pressure pulsations in a hydraulic system.
Skripkin Sergey   +3 more
doaj   +1 more source

Experimental Study on Effects of Adjustable Vaned Diffusers on Impeller Backside Cavity of Centrifugal Compressor in CAES

open access: yesEnergies, 2021
The impeller backside cavity (IBC) is a unique structure of centrifugal compressor in compressed air energy storage (CAES) systems, which affects the aerodynamic performance of centrifugal compressor, and the angle change of the downstream coupled ...
Zhihua Lin   +5 more
doaj   +1 more source

Effects of Local Mixing Ratios and Mass Flow Rates on Combustion Performance of the Fuel-Rich LOX (Liquid Oxygen)/kerosene Gas Generator in the ATR (Air Turbo Rocket) Engine

open access: yesAerospace, 2023
This paper presents a numerical simulation analysis of the flow and combustion characteristics of a fuel-rich LOX (liquid oxygen)/kerosene gas generator in an ATR (air turbo rocket) engine, examining the effects of local parameters on the combustion flow
Yuankun Zhang   +5 more
doaj   +1 more source

Experimental measurements of the permeability of fibrous carbon at high temperature

open access: yes, 2016
A series of experiments was performed to obtain permeability data on FiberForm(R), a commercial carbon preform used for manufacturing thermal protection systems. A porous sample was placed in a quartz flow-tube heated by an isothermal furnace.
Cochell, Thomas J.   +6 more
core   +1 more source

Combustion Engineering and Thermophysical Properties on Combustion.

open access: yesNetsu Bussei, 1995
燃焼は流動、 伝熱、 化学反応の複合現象であるため、 今後さらに燃焼効率の向上や環境汚染物質の低減を達成しつつ、 燃焼によるエネルギー利用を積極的に推進していくためには、 火炎中での現象の解明とともに燃焼現象に関連する様々な物質の広範囲な温度域での正確な物性値が必要となっている。 本解説では、 燃焼現象をモデル化して総合的なシミュレーションを行う上でのモデル化の現状や問題点および今後の課題とともに、 必要とされる熱物性値との関係について概説する。
Hideyuki Aoki, Takatoshi Miura
openaire   +2 more sources

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé   +5 more
wiley   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan   +4 more
wiley   +1 more source

Structure – Property relationships for nanofluids [PDF]

open access: yes, 2011
This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
3rd Micro and Nano Flows Conference (MNF2011)   +3 more
core  

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