Complete FDTD analysis of microwave heating processes in frequency-dependent and temperature-dependent media

1997 ◽  
Vol 45 (1) ◽  
pp. 108-117 ◽  
Author(s):  
F. Torres ◽  
B. Jecko
Keyword(s):  
Microwave Heating ◽  
Temperature Dependent ◽  
Frequency Dependent

Study on the temperature-dependent coupling among viscosity, conductivity and structural relaxation of ionic liquids

2015 ◽  
Vol 17 (29) ◽  
pp. 19126-19133 ◽  
Author(s):  
Tsuyoshi Yamaguchi ◽  
Takuya Yonezawa ◽  
Shinobu Koda
Keyword(s):  
Ionic Liquids ◽  
Structural Relaxation ◽  
Spin Echo ◽  
Neutron Spin ◽  
Temperature Dependent ◽  
Frequency Dependent ◽  
Neutron Spin Echo ◽  
Dependent Viscosity

The frequency-dependent viscosity and conductivity of three imidazolium-based ionic liquids were measured at several temperatures in the MHz region, and the results are compared with the intermediate scattering functions determined by neutron spin echo spectroscopy.

Microwave heating of materials with temperature-dependent wavespeed

Wave Motion ◽  
1994 ◽  
Vol 19 (1) ◽  
pp. 67-81 ◽  
Author(s):  
T.R. Marchant ◽  
A.H. Pincombe
Keyword(s):  
Microwave Heating ◽  
Temperature Dependent

scholarly journals Behavioural Physiology of the Colonial Hydroid Obelia

1971 ◽  
Vol 54 (3) ◽  
pp. 723-735
Author(s):  
JAMES G. MORIN ◽  
IAN M. COOKE
Keyword(s):  
Conduction Velocity ◽  
Refractory Period ◽  
Stimulus Frequency ◽  
Rapid Rise ◽  
Temperature Dependent ◽  
Flash Intensity ◽  
Rapid Decay ◽  
Frequency Dependent ◽  
Stimulus Train ◽  
Colonial Hydroid

1. The bioluminescent system of Obelia responds to stimulation by producing a burst of excitatory potentials (luminescent potentials, LPs) with each stimulus except the first. These LPs initiate flashes from the coupled luminescent effectors. 2. There is temporal facilitation between the applied stimulus and the LP-system; the LP-system shows adaptation to stimulation by a rise in threshold as well as fatigue. 3. There is facilitation within the LP-system that is temporal at a given point and spatial (in the distance of spread) between two or more points. The result is a limited spread of the first potentials and decreasing numbers of potentials with increasing distance but often a through-conduction of the final potentials. 4. The conduction velocity of the LPs is about22 cm/s at 12 °C; the refractory period is about 60 ms at 20 °C and 150 ms at 12 °C; the latency from stimulation to the first LP in a stimulus train first decreases from 130-600 ms to 20-80 ms and then increases again to 150-600 ms at 20 °C. The latency between LP and the flash is about 20±9 ms. 5. The intervals between LPs in bursts evoked by stimuli applied at 1/s gradually increase from about 65 ms to about 135 ms at 20 °C. The absolute LP intervals are temperature-dependent (the relative ratios are not) but independent of the stimulus frequency. The number of LPs in a burst is frequency dependent. 6. The facilitation curve of the LP-system-luminescent effector junctions, as determined from flash intensity, shows a rapid rise between 60 and 80 ms, a fairly rapid decay between 80 and 200 ms, and a long residual decay which lasts for several hundred milliseconds.

scholarly journals Microwave assisted ignition to achieve combustion synthesis

2001 ◽  
Vol 5 (3) ◽  
pp. 151-164 ◽  
Author(s):  
E. Balakrishnan ◽  
M. I. Nelson ◽  
X. D. Chen
Keyword(s):  
Mathematical Model ◽  
Combustion Synthesis ◽  
Microwave Heating ◽  
Microwave Power ◽  
Simple Mathematical Model ◽  
Combustion Kinetics ◽  
Temperature Dependent ◽  
First Order ◽  
Microwave Assisted ◽  
Dependent Absorption

The use of microwave heating to initiate combustion synthesis has been increasingly investigated in recent years because of its advantages over traditional methods. A simple mathematical model is used to model these experiments. The microwave power absorption term is modelled as the product of an Arrhenius reaction term with a function that decays exponentially with distance. The former represents the temperature-dependent absorption of the microwaves whereas the latter describes the penetration of the material by the microwaves. Combustion kinetics are modelled as a first-order Arrhenius reaction.

Sign in / Sign up

Export Citation Format

Share Document