نتایج جستجو برای: ohmic heating

تعداد نتایج: 57995  

Journal: :OENO One 2021

High energy consumption is often required to increase the extraction of phenolic compounds from grapes during alcoholic fermentation. Processes such as thermovinification require significant temperature changes over a long period time ensure diffusion grape skin layer must. In this study, capability ohmic heating (OH) process (E = 55 V/cm, t 60–90 s, T 72 °C) improve extractability valuable int...

Journal: :Physical review letters 2007
I G J Classen E Westerhof C W Domier A J H Donné R J E Jaspers N C Luhmann H K Park M J van de Pol G W Spakman M W Jakubowski

The suppression of (neoclassical) tearing modes is of great importance for the success of future fusion reactors like ITER. Electron cyclotron waves can suppress islands, both by driving noninductive current in the island region and by heating the island, causing a perturbation to the Ohmic plasma current. This Letter reports on experiments on the TEXTOR tokamak, investigating the effect of hea...

Journal: :The Review of scientific instruments 2016
Shogo Hagino Tomoki Nagaya Takuya Nishiokada Takuro Otsuka Masayuki Muramatsu Atsushi Kitagawa Fuminobu Sato Yushi Kato

Multicharged metal ion beams are required to be applied in a wide range of fields. We aim at synthesizing iron-endohedral fullerene by transporting iron ion beams from the first stage into the fullerene plasma in the second stage of the tandem-type electron cyclotron resonance ion source (ECRIS). We developed new evaporators by using a direct ohmic heating method and a radiation heating method ...

2006
J. J. Honrubia J. Meyer-ter-Vehn

Three-dimensional (3D) hybrid PIC simulations are presented to study electron energy transport and deposition in a full-scale fast ignition configuration. Multi-prong core heating close to ignition is found when a few GA, few PW beam is injected. Resistive beam filamentation in the corona seeds the 3D current pattern that penetrates the core. Ohmic heating is important in the low-density corona...

Journal: :Optics and Laser Technology 2022

We demonstrate for the first time reconfigurability of optical signals within advanced laminated composite. The approach employs an ultra-thin planar circuit, embedded glass fibre reinforced polymer (GFRP) that switches input though Ohmic heating. This advance highlights new opportunities composites, enabling data transmission redundancy and a consideration branching architectures.

2001
W. HORTON F. PORCELLI P. ZHU A. AYDEMIR Y. KISHIMOTO T. TAJIMA

An independent assessment of the physics of Ignitor is presented. Ignitor is a physics demonstration experiment, with the main goal of achieving thermonuclear ignition, defined as the regime where fusion alpha heating compensates for all forms of energy losses. Simulations show that a pulse of α particle power up to 10-20 MW is produced for a period over a few seconds. Crucial issues are the pr...

ژورنال: :مهندسی بیوسیستم ایران 2015
سجاد قادری مهدی کاشانی نژاد وحید قنبری محمد گنجه

اساس فرایند حرارت‏دهی اهمیک (ohmic heating) عبور جریان الکتریکی متناوب از محلول‏های چندفازی و درپی آن تولید حرارت به دلیل مقاومت‏ ذرات محلول در برابر عبور جریان الکتریکی است. در این تحقیق به منظور بررسی اثر فاکتورهای بحرانی مؤثر بر این فرایند، انتقال هم زمان حرارت و الکتریسیته در یک سیستم غذایی دوفازی جامدـ مایع مدل سازی شد. در این مد ل سازی از یک شبیهسازی سه بعدی برای بررسی اثر توزیع ذرات (غلظ...

Journal: :Optics letters 1988
J J Rocca D G Beethe M C Marconi

Capillary plasmas with large length-to-diameter ratios (1ld > 100) are proposed as amplification media for soft-xray and XUV radiation by direct discharge excitation. The capillary geometry provides a small volume and an adequate resistance for ohmic heating. Heat conduction to the capillary walls provides rapid cooling of the plasma during the decay of the excitation pulse, resulting in a larg...

2002
Andrew Cumming

We discuss the evolution of the magnetic field of an accreting white dwarf. We calculate the ohmic decay modes for accreting white dwarfs, whose interiors are maintained in a liquid state by compressional heating. We show that the lowest order ohmic decay time is (8–12) billion years for a dipole field, and (4–6) billion years for a quadrupole field. We then compare the timescales for ohmic dif...

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