Results 131 to 140 of about 67,496 (315)

Adaptive Observer for Coupled Wave PDE and Infinite ODE With Sampled Data and Unknown Input: Application to Brain Hemodynamics Estimation

International Journal of Adaptive Control and Signal Processing, EarlyView.
This article proposes a convergent adaptive observer for a damped wave PDE and an infinite‐dimensional ODE coupled in cascade using sampled‐in‐space ODE state measurements. The proposed observer estimates the distributed states of the PDE and ODE along with unknown PDE parameters and spatial input.
Zehor Belkhatir, Sarah Mechhoud, Taous‐Meriem Laleg‐Kirati   +2 more
wiley   +1 more source

Boiling two-phase pressure drop in small diameter tubes

, 2007
An experimental study of two-phase pressure drop in small diameter tubes is described in this paper. Stainless steel tubes of internal diameter and length of 4.26 mm, 500 mm and 2.01 mm, 211 mm were used. The working fluid was R134a and the range covered
Huo, X, Karayiannis, TG, Tian, YS, Shiferaw, D, Kenning, DBR   +4 more
core  

Análise de ebulição nucleada da água contendo nanopartículas de alumina, maguemita ou nanotubo de carbono [PDF]

, 2011
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia MecânicaNos últimos anos, um promissor tipo de fluido tem obtido grande atenção entre os pesquisadores de ciências térmicas ao ...
Rainho Neto, Amaury
core  

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Heat transfer to impacting drops and post critical heat flux dispersed flow

, 1978
Heat transfer to drops impacting on a hot surface is examined in context of dispersions of flowing, boiling fluids. The liquid contribution to heat transfer from a hot tube to a two-phase dispersion is formulated in terms of heat transfer contributions ...
Kendall, Gail E., Rohsenow, Warren M.
core  

Model of critical heat flux in subcooled flow boiling [PDF]

, 1968
The physical phenomenon occurring before and at the critical heat flux (CHF) for subcooled flow boiling has been investigated. The first phase of this study established the basic nature of the flow structure at CHF.
Fiori, Mario P., Bergles A. E.
core  

Saturated flow boiling heat transfer and critical heat flux in small horizontal flattened tubes

, 2012
This paper presents experimental results for flow boiling heat transfer coefficient and critical heat flux (CHF) in small flattened tubes. The tested flattened tubes have the same equivalent internal diameter of 2.2 mm, but different aspect height/width ...
Tibiriçá, Cristiano Bigonha, Thome, John Richard, Ribatski, Gherhardt   +2 more
core   +1 more source

The impact of equivalence ratio on the fire characteristics of Kerosene/air flame produced by NexGen burner for aeronautic application

Case Studies in Thermal Engineering
This paper provides an experimental investigation of a Kerosene/air flame (produced by the NexGen burner designed by the FAA, and here calibrated for ISO 2685/AC20-135 standards fire tests conditions), which is used to generate flame/burnt gases ...
R. Ogabi, B. Manescau, K. Chetehouna, E. Obame, S. Senave   +4 more
doaj   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Assessment of Surface Heat Flux and Deep Fluid Degassing in Fracture‐Dominated Geothermal Zones in Taxkorgan, Xinjiang, Western China

Geochemistry, Geophysics, Geosystems
Understanding surface heat flux is essential for evaluating geothermal system dynamics and resource potential, particularly in tectonically active but non‐volcanic regions. This study presents the first integrated assessment of surface heat flux in three
Yingchun Wang, Yanlong Kong, Shuang Liao, Yuanzhuo Dong, Yi Wang   +4 more
doaj   +1 more source