Results 191 to 200 of about 44,690 (331)

Weak Solutions for a Fourth Order Degenerate Parabolic Equation [PDF]

, 2006
Changchun Liu, Guo Jin-yong
openalex   +1 more source

Investigating the Role of Geometry in Solar Water Heating: A Case Study of Cylindrical and Frustum Buckets

Energy Science &Engineering, EarlyView.
ABSTRACT This study studies the effect of bucket shape and geometry on the performance of solar water heating systems. Three plexiglass (PMMA) buckets were chosen: cylindrical, frustum, and inverted frustum. Each bucket has a capacity of 13 L and 3 mm wall thickness.
Pankaj Dumka, Nitesh Pandey, Dhananjay R. Mishra, Farruh Atamurotov, Ahmed Mohsin Alsayah, Nima Khalilpoor   +5 more
wiley   +1 more source

The nonlinear fast diffusion equation on smooth metric measure spaces: Hamilton-Souplet-Zhang estimates and a Ricci-Perelman super flow. [PDF]

Calc Var Partial Differ Equ
Taheri A, Vahidifar V.
europepmc   +1 more source

Numerical Study on the Effect of Structural Variation of S‐Shaped Flow Channel Absorber on the Thermal Performance of Line‐Focusing Fresnel Lens Solar Collector

Energy Science &Engineering, EarlyView.
ABSTRACT As a clean and renewable energy source, solar energy development and utilization have garnered significant attention. This study investigates the potential of Fresnel lenses to enhance the thermal efficiency of solar collectors by analyzing the effects of water flow channel structure and flow rate on heat gain.
Huaping Zhang, Qiongqiong Yao, Peizheng Liu, Zhangyang Kang, Rufei Tan, Jin Xu   +5 more
wiley   +1 more source

Observation of Boyer-Wolf Gaussian modes. [PDF]

Nat Commun
Tschernig K, Guacaneme D, Mhibik O, Divliansky I, Bandres MA.   +4 more
europepmc   +1 more source

Gradient estimates for solutions of parabolic differential equations degenerating at infinity [PDF]

, 2007
Alberto Favaron, Alfredo Lorenzi
openalex   +1 more source

Lattice Boltzmann Method Simulations About Shale Gas Diffusion in Sinusoidal Channels

Energy Science &Engineering, EarlyView.
This paper characterizes the microscopic features of shale nanopores using sinusoidal functions and investigates the diffusion effects of methane gas in irregular nanopores through the lattice Boltzmann method. The result shows that methane is significantly influenced by large‐amplitude protrusions of the wall.
Xu Yan, Yuli Chang, Yafei Xu, Jichao Zhao, Dehua Liu   +4 more
wiley   +1 more source

On the Numerical Integration of the Fokker-Planck Equation Driven by a Mechanical Force and the Bismut-Elworthy-Li Formula. [PDF]

Entropy (Basel)
Sanders J, Muratore-Ginanneschi P.
europepmc   +1 more source

On the uniqueness and stability of entropy solutions of nonlinear degenerate parabolic equations with rough coefficients

, 2003
Kenneth H. Karlsen, Nils Henrik Risebro
openalex   +2 more sources

Space‐Time Modeling and Numerical Simulations of Non‐Newtonian Fluids Using Internal Variables

International Journal for Numerical Methods in Fluids, EarlyView.
Based on Hamilton's principle, the study focuses on a novel strategy for the modeling of non‐Newtonian fluids with the help of internal variables. Here, the viscosity evolves locally in space and time. Three configurations are numerically implemented, namely channel flow, a benchmark, and a lid‐driven cavity.
Philipp Junker, Thomas Wick
wiley   +1 more source