Results 51 to 60 of about 21,976 (201)

Homotopic Solution for 3D Darcy–Forchheimer Flow of Prandtl Fluid through Bidirectional Extending Surface with Cattaneo–Christov Heat and Mass Flux Model

Complexity, 2021
The 3D Prandtl fluid flow through a bidirectional extending surface is analytically investigated. Cattaneo–Christov fluid model is employed to govern the heat and mass flux during fluid motion. The Prandtl fluid motion is mathematically modeled using the
Shamaila Batool, A. M. Alotaibi, Waris Khan, Ahmed Hussein Msmali, null Ikramullah, Wali Khan Mashwani   +5 more
doaj   +1 more source

Quantitative aspects on the ill-posedness of the Prandtl and hyperbolic Prandtl equations [PDF]

, 2023
We address a physically-meaningful extension of the Prandtl system, also known as hyperbolic Prandtl equations. We show that the linearised model around a non-monotonic shear flow is ill-posed in any Sobolev spaces.
Scrobogna, Stefano, Kortum, Joshua, De Anna, Francesco   +2 more
core   +1 more source

Global and Detailed Calculation of Tube Wall Temperature in a Process Furnace Steam Superheater

Chemie Ingenieur Technik, EarlyView.
This study presents a comparison between an iterative global model and multiple approaches to a new non‐iterative model with the purpose of predicting tube wall temperature of a superheater. The results show that the non‐iterative method achieves sufficient accuracy while improving the prediction of local temperature distribution and better ...
Anežka Michálková, Zdeněk Jegla
wiley   +1 more source

Stability of Viscous Three‐Dimensional Stratified Couette Flow via Dispersion and Mixing

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT This article explores the stability of stratified Couette flow in the viscous 3d$3d$ Boussinesq equations. In this system, mixing effects arise from the shearing background, and gravity acts as a restoring force leading to dispersive internal gravity waves.
Michele Coti Zelati, Augusto Del Zotto, Klaus Widmayer   +2 more
wiley   +1 more source

Versuchsaufbau Prandtl Rad MÜ76-18 [PDF]

VERSUCHSAUFBAU PRANDTL RAD MÜ76-18 Versuchsaufbau Prandtl Rad MÜ76-18 (Gesamtansicht MÜ76-18) Versuchsaufbau Prandtl Rad MÜ76-18 (Gesamtansicht MÜ76-18) Versuchsaufbau Prandtl Rad MÜ76-18 (Vorderansicht MÜ76-18) Versuchsaufbau Prandtl ...

core   +2 more sources

A Numerical Investigation of the Effects of Piston Bowl Geometry and Spray Angle on Combustion, Performance and Emission of a Diesel Engine

Energy Science &Engineering, EarlyView.
A piston bowl's design and spray angle improve air‐fuel mixing, resulting in more complete combustion and higher efficiency. Ansys Forte 2023 R1 a CFD software was used to analyze the effects of five combustion chamber geometries of cylinder, modified re‐entrant, re‐entrant, double‐stepped, and stepped on engine performance, combustion, and emission ...
Md. Nazmul Haque, Abdullah Al Rifat, Tafsirul Hassan, Md. Ifthaker Alam, Mohammad Mehedi Hasan Kazol, Md. Ashraful Islam, Abidur Rahman Adib, Mizanur Rahman   +7 more
wiley   +1 more source

Thermal field reconstruction and compressive sensing using proper orthogonal decomposition

Frontiers in Energy Research
Model order reduction allows critical information about sensor placement and experiment design to be distilled from raw fluid mechanics simulation data.
John Matulis, Hitesh Bindra
doaj   +1 more source

Numerical Investigation of Turbulent Heat Transfer Properties at Low Prandtl Number

Frontiers in Energy Research, 2020
The sodium-cooled fast reactor (SFR), which is one of the most promising candidates for meeting the goal declared by the Generation IV International Forum (GIF), has drawn a lot of attention.
Xiang Chai, Xiaojing Liu, Jinbiao Xiong, Xu Cheng   +3 more
doaj   +1 more source

Glazing Effects on Dynamic‐Insulation TSC Façades: A CFD‐Supported Experimental Study of Flow, Heat Transfer, and Ventilation Preheating

Energy Science &Engineering, EarlyView.
Glazed transpired solar collectors achieve 48–75% efficiency and 11% more seasonal heat than unglazed designs by cutting convective losses, while both offer complementary benefits for ventilation preheating and dynamic wall insulation, with paybacks of 5.5–6.8 years.
Mohammad Fawaier, Nabeel Abushaban, Omar Alharasees, Safwan Al‐Qawabah, Ahmad Al Aboushi, Haitham A. Al Hasanat, Mohammad K. S. Ma'aitah, Laith Al‐Hyari   +7 more
wiley   +1 more source

Magnetic and velocity fields in a dynamo operating at extremely small Ekman and magnetic Prandtl numbers

Contributions to Geophysics and Geodesy, 2017
Numerical simulations of the geodynamo are becoming more realistic because of advances in computer technology. Here, the geodynamo model is investigated numerically at the extremely low Ekman and magnetic Prandtl numbers using the PARODY dynamo code ...
Ján ŠIMKANIN, Juraj KYSELICA
doaj   +1 more source