Application of ohe Total Aproximation Method for the Investigation of the Temperature Regime of a Polychromatic Solid-State Lamp

2005 ◽  
Vol 10 (2) ◽  
pp. 107-117
Author(s):  
J. Dabulytė ◽  
F. Ivanauskas
Keyword(s):  
Solid State ◽  
Approximation Method ◽  
Temperature Regime ◽  
Numerical Results ◽  
Investigation Method ◽  
Total Approximation

In this paper the application of the total approximation method for polychromatic solid-state lamp was considered. The main goal of this work was to present an investigation method for the temperature regime of n LEDs based on the investigation of the temperature regime of one LED. There were presented numerical results of the investigated problem.

scholarly journals Application of the successive approximation method to the analysis of bending plates

2018 ◽  
Vol 251 ◽  
pp. 04058
Author(s):  
Radek Gabbasov ◽  
Vladimir Filatov ◽  
Nikita Ryasny
Keyword(s):  
Boundary Conditions ◽  
Successive Approximation ◽  
Approximation Method ◽  
High Accuracy ◽  
Numerical Results ◽  
Successive Approximations ◽  
Method Of Successive Approximations ◽  
Successive Approximation Method ◽  
Medium Thickness ◽  
Bending Plates

This work presents an algorithm for calculating the bending plates of medium thickness according to the Reissner’. To obtain numerical results, the method of successive approximations (MSA) is used. This method has high accuracy and fast convergence, which was confirmed by the solution of a range of tasks. Publication of the results of the calculation of plates of medium thickness with the boundary conditions revised here is supposed to be in the following articles.

Server utilization factors in queueing loss systems with ordered entry and heterogeneous servers

1986 ◽  
Vol 23 (01) ◽  
pp. 236-242 ◽  
Author(s):  
Behnam Pourbabai ◽  
David Sonderman
Keyword(s):  
Simulation Study ◽  
Approximation Method ◽  
Counting Process ◽  
Numerical Results ◽  
Heterogeneous Servers ◽  
Loss System ◽  
Utilization Factor ◽  
Service Rates ◽  
Loss Systems ◽  
Server Utilization

Approximation expressions for the server utilization factor of each server in a heterogeneous-server G/G/n queueing loss system with ordered entry are derived. The system is assumed to face a stationary counting process. Service times are generally distributed with possibly different service rates. The numerical results from this approximation method are then compared with those from a simulation study.

scholarly journals A Simple Approximation Method for Obtaining the Spanwise Lift Distribution

1941 ◽  
Vol 45 (370) ◽  
pp. 331-336 ◽  
Author(s):  
O. Schrenk
Keyword(s):  
Approximation Method ◽  
Numerical Results ◽  
Exact Method ◽  
Simple Approximation ◽  
Satisfactory Degree ◽  
Computation Work

In this paper a simple approximation method is presented for rapidly computing the lift distributions of arbitrary aerofoils. The numerical results are compared with those obtained by an exact method and for many purposes show a satisfactory degree of accuracy. The latter, for all practically occurring cases, can be estimated at the start of the computation work with the aid of the comparison examples given.

Server utilization factors in queueing loss systems with ordered entry and heterogeneous servers

1986 ◽  
Vol 23 (1) ◽  
pp. 236-242 ◽  
Author(s):  
Behnam Pourbabai ◽  
David Sonderman
Keyword(s):  
Simulation Study ◽  
Approximation Method ◽  
Counting Process ◽  
Numerical Results ◽  
Heterogeneous Servers ◽  
Loss System ◽  
Utilization Factor ◽  
Service Rates ◽  
Loss Systems ◽  
Server Utilization

Approximation expressions for the server utilization factor of each server in a heterogeneous-server G/G/n queueing loss system with ordered entry are derived. The system is assumed to face a stationary counting process. Service times are generally distributed with possibly different service rates. The numerical results from this approximation method are then compared with those from a simulation study.

Solid state convection in the icy satellites: numerical results

2002 ◽  
Vol 29 (5) ◽  
pp. 757-762 ◽  
Author(s):  
L. Czechowski ◽  
J. Leliwa-Kopystyñski
Keyword(s):  
Solid State ◽  
Numerical Results ◽  
Icy Satellites

scholarly journals Rapidly Reversible Organic Crystalline Switch for Conversion of Heat into Mechanical Energy

2021 ◽  
Author(s):  
Madushani Dharmarwardana ◽  
Srimanta Pakhira ◽  
Raymond P. Welch ◽  
Carlos Caicedo Narvaez ◽  
Michael A. Luzuriaga ◽  
...  
Keyword(s):  
Phase Transition ◽  
Solid State ◽  
Ambient Temperature ◽  
Temperature Change ◽  
Temperature Regime ◽  
Room Temperature ◽  
Mechanical Energy ◽  
Reversible Systems ◽  
Physical Force ◽  
Original Length

<div> <div> <div> <p>Solid state thermosalience—a sudden exertion of an expansive or contractive physical force following a temperature change in a solid state compound—is rare, few are reversible systems, and most of these are limited to a dozen or so cycles before the crystal degrades or they reverse slowly over the course of many minutes or even hours. In this work, we show a fully reversible actuator that is stable at room temperature for multiple years and is capable of actuation for more than two hundred cycles at near ambient temperature. Specifically, the crystals shrink to 90% of its original length instantaneously upon heating beyond 45 °C and expands back to its original length upon cooling below 35 °C. This temperature regime is important because it occurs around physiologically important temperatures. Furthermore, the phase transition occurs instantaneously, with little obvious hysteresis, allowing us to create real-time actuating thermal fuses that cycle between on and off rapidly. </p> </div> </div> </div>

scholarly journals Rapidly Reversible Organic Crystalline Switch for Conversion of Heat into Mechanical Energy

2020 ◽  
Author(s):  
Madushani Dharmarwardana ◽  
Srimanta Pakhira ◽  
Raymond P. Welch ◽  
Carlos Caicedo Narvaez ◽  
Michael A. Luzuriaga ◽  
...  
Keyword(s):  
Phase Transition ◽  
Solid State ◽  
Ambient Temperature ◽  
Temperature Change ◽  
Temperature Regime ◽  
Room Temperature ◽  
Mechanical Energy ◽  
Reversible Systems ◽  
Physical Force ◽  
Original Length

<div> <div> <div> <p>Solid state thermosalience—a sudden exertion of an expansive or contractive physical force following a temperature change in a solid state compound—is rare, few are reversible systems, and most of these are limited to a dozen or so cycles before the crystal degrades or they reverse slowly over the course of many minutes or even hours. In this work, we show a fully reversible actuator that is stable at room temperature for multiple years and is capable of actuation for more than two hundred cycles at near ambient temperature. Specifically, the crystals shrink to 90% of its original length instantaneously upon heating beyond 45 °C and expands back to its original length upon cooling below 35 °C. This temperature regime is important because it occurs around physiologically important temperatures. Furthermore, the phase transition occurs instantaneously, with little obvious hysteresis, allowing us to create real-time actuating thermal fuses that cycle between on and off rapidly. </p> </div> </div> </div>

scholarly journals Rapidly Reversible Organic Crystalline Switch for Conversion of Heat into Mechanical Energy

2020 ◽  
Author(s):  
Madushani Dharmarwardana ◽  
Srimanta Pakhira ◽  
Raymond P. Welch ◽  
Carlos Caicedo Narvaez ◽  
Michael A. Luzuriaga ◽  
...  
Keyword(s):  
Phase Transition ◽  
Solid State ◽  
Ambient Temperature ◽  
Temperature Change ◽  
Temperature Regime ◽  
Room Temperature ◽  
Mechanical Energy ◽  
Reversible Systems ◽  
Physical Force ◽  
Original Length

<div> <div> <div> <p>Solid state thermosalience—a sudden exertion of an expansive or contractive physical force following a temperature change in a solid state compound—is rare, few are reversible systems, and most of these are limited to a dozen or so cycles before the crystal degrades or they reverse slowly over the course of many minutes or even hours. In this work, we show a fully reversible actuator that is stable at room temperature for multiple years and is capable of actuation for more than two hundred cycles at near ambient temperature. Specifically, the crystals shrink to 90% of its original length instantaneously upon heating beyond 45 °C and expands back to its original length upon cooling below 35 °C. This temperature regime is important because it occurs around physiologically important temperatures. Furthermore, the phase transition occurs instantaneously, with little obvious hysteresis, allowing us to create real-time actuating thermal fuses that cycle between on and off rapidly. </p> </div> </div> </div>

Rapidly Reversible Organic Crystalline Switch for Conversion of Heat into Mechanical Energy

2020 ◽  
Author(s):  
Madushani Dharmarwardana ◽  
Srimanta Pakhira ◽  
Raymond P. Welch ◽  
Carlos Caicedo Narvaez ◽  
Michael A. Luzuriaga ◽  
...  
Keyword(s):  
Phase Transition ◽  
Solid State ◽  
Ambient Temperature ◽  
Temperature Change ◽  
Temperature Regime ◽  
Room Temperature ◽  
Mechanical Energy ◽  
Reversible Systems ◽  
Physical Force ◽  
Original Length

<div> <div> <div> <p>Solid state thermosalience—a sudden exertion of an expansive or contractive physical force following a temperature change in a solid state compound—is rare, few are reversible systems, and most of these are limited to a dozen or so cycles before the crystal degrades or they reverse slowly over the course of many minutes or even hours. In this work, we show a fully reversible actuator that is stable at room temperature for multiple years and is capable of actuation for more than two hundred cycles at near ambient temperature. Specifically, the crystals shrink to 90% of its original length instantaneously upon heating beyond 45 °C and expands back to its original length upon cooling below 35 °C. This temperature regime is important because it occurs around physiologically important temperatures. Furthermore, the phase transition occurs instantaneously, with little obvious hysteresis, allowing us to create real-time actuating thermal fuses that cycle between on and off rapidly. </p> </div> </div> </div>

Small signal approximation method to determine output patterns of off-axis pumped solid-state lasers

2021 ◽  
Vol 478 ◽  
pp. 126406
Author(s):  
Tianhong Lian ◽  
Ke Kou ◽  
Jianning Liu ◽  
Jun Weng ◽  
Yun Liu ◽  
...  
Keyword(s):  
Solid State ◽  
Approximation Method ◽  
Small Signal ◽  
Solid State Lasers ◽  
Signal Approximation
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