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Relevant bibliographies by topics / Structural Thermal Optical Performance Model

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Academic literature on the topic 'Structural Thermal Optical Performance Model'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Structural Thermal Optical Performance Model"

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Yang, Jiaping, Xiling Yao, Yuxin Cai, and Guijun Bi. "Multiphysics Modeling, Sensitivity Analysis, and Optical Performance Optimization for Optical Laser Head in Additive Manufacturing." Applied Sciences 11, no. 2 (2021): 868. http://dx.doi.org/10.3390/app11020868.

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Optical laser head is a key component used to shape the laser beam and to deliver higher power laser irradiation onto workpieces for material processing. A focused laser beam size and optical intensity need to be controlled to avoid decreasing beam quality and loss of intensity in laser material processing. This paper reports the multiphysics modeling of an in-house developed laser head for laser-aided additive manufacturing (LAAM) applications. The design of computer experiments (DoCE) combined with the response surface model was used as an efficient design approach to optimize the optical pe

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Lv, Ban, Guo Li Wang, and Yu Yang. "Integrated Thermal-Structural Analysis of a Reflecting Optical System with All Metal Components." Advanced Materials Research 1061-1062 (December 2014): 818–21. http://dx.doi.org/10.4028/www.scientific.net/amr.1061-1062.818.

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The thermal deformation of reflecting optical system in the ambient temperature affects the system performance greatly. Based on the results of thermal balance test, the paper has made a full analysis to the deformation of reflecting optical system on the high-low temperature using the finite elemernt method,so as to validate whether the optical system meet the requirement of optical image design and temperature. This method can combine the thermal optical analysis and thermal balance test data effectively ,and therefore the most actual thermal optical anslysis model can be obtained to guide t

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Li, Yong An, Ting Ting Wang, Xue Lai Liu, and Teng Xing. "Thermal Performance Research of Thermal Recovery Unit for Air-Conditioning Systerm." Advanced Materials Research 243-249 (May 2011): 4965–68. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.4965.

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This document established a three-dimensional laminar mathematical and physical model which describes heat transfer, mass transfer coupling process in wet thermal recovery unit for air-conditioning systerms, based on Computational Fluid Dynamics (CFD) simulations. In addition, the research discussed the distributions of pressure, temperature, concentration and other parameters in the air channels. The heat transfer performance was analyzed by enthalpy efficiency. The results showed that the structural parameters of wet thermal recovery unit for air-conditioning systerm played important influen

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Tovstonog, V. A., V. I. Tomak, and A. S. Burkov. "Estimating the Thermal State and Methodological Issues in Gas Dynamic Testing of Refractory Ceramic Samples." Herald of the Bauman Moscow State Technical University. Series Mechanical Engineering, no. 6 (135) (December 2020): 45–65. http://dx.doi.org/10.18698/0236-3941-2020-6-45-65.

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Material selection for aerospace structural and power plant units subjected to thermal stresses is based on thorough investigation of their physical, mechanical and optical properties in a wide range of temperatures up to 2500--3000 K, which are in practice the highest possible. However, it is exceptionally difficult and expensive to obtain the whole extent of data on the properties of structural and refractive materials currently in development that is required to analytically estimate the thermal state and performance of the structures designed to be subjected to thermal stresses. Moreover,

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Yang, Lin, Qiang Li, Lin Kong, Song Gu, and Lei Zhang. "Quasi-All-Passive Thermal Control System Design and On-Orbit Validation of Luojia 1-01 Satellite." Sensors 19, no. 4 (2019): 827. http://dx.doi.org/10.3390/s19040827.

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In order to resolve the large fluctuations in temperature range problem of Luojia 1-01 satellite caused by low heat inertia and poor thermal conductivity of structure, a quasi-all-passive thermal control system (TCS) design is presented under the conditions of limited resources including mass and power consumption. The effectiveness of the TCS design is verified by both ground thermal balanced test and related telemetry data of on-orbit performance. Firstly, according to the structural features and working modes of the satellite, isothermal design was implemented and the effectiveness was veri

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Sadanand, D. K. Dwivedi, Fahad A. Alharthi, and Adel El Marghany. "One-Step Hydrothermal Synthesis of Cu2ZnSn(S, Se)4 Nanoparticles: Structural and Optical Properties." Nanoscience and Nanotechnology Letters 12, no. 3 (2020): 338–44. http://dx.doi.org/10.1166/nnl.2020.3121.

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Cu2ZnSn(S, Se)4(CZTSSe) have become increasingly popular due to the improved efficiency with different architectures for various types of solar cells. Due to its high absorption coefficient, low toxicity, an abundance of its components, and direct bandgap, it attracted intense attention as an absorbent material for thin-film solar cells. According to the Shockley–Queisser (S–Q) detailedbalance model, the constraining performance of photovoltaic energy conversion for single-junction solar cells is 33.7%, for an ideal 1.34 eV bandgap. In the present study, we have prepared a CZTSSe nanoparticle

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Mitro, S. K., M. A. Rahman, F. Parvin, and A. K. M. A. Islam. "Intermetallic M Pt3 (M = Ti, Zr, Hf): Elastic, electronic, optical and thermal properties." International Journal of Modern Physics B 33, no. 18 (2019): 1950189. http://dx.doi.org/10.1142/s0217979219501893.

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In this study, the structural and unexplored elastic, electronic, optical and thermal properties of Pt-based alloys MPt3 (M = Ti, Hf) and only optical and thermal properties of ZrPt3 are subjected to investigation using the method of the first principles. The results of pressure dependence of mechanical and thermal properties are discussed. The electronic band structures and density of state data show metallic conductivity for all the compounds. The main contribution at Fermi level comes from Ti 3d and Zr 4d (for TiPt3 and ZrPt[Formula: see text] and Pt 5d (for HfPt[Formula: see text] orbitals

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Puneeth, K. B., and K. N. Seetharamu. "Analysis, Design, and Optimization of Thermal In-Plane Microactuator—Chevron Type." Journal of Microelectronics and Electronic Packaging 8, no. 3 (2011): 102–9. http://dx.doi.org/10.4071/imaps.0296.

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A predictive model of thermal actuator behavior has been developed and validated that can be used as a design tool to customize the performance of an actuator to a specific application. Modeling thermal actuator behavior requires the use of two sequentially or directly coupled models, the first to predict the temperature increase of the actuator due to the applied voltage and the second to model the mechanical response of the structure due to the increase in temperature. These models have been developed using ANSYS for both thermal response and structural response. Consolidation of FEA (finite

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Rajčić, Vlatka, Nikola Perković, Chiara Bedon, Jure Barbalić, and Roko Žarnić. "Thermal and Energy-Efficiency Assessment of Hybrid CLT–glass Façade Elements." Applied Sciences 10, no. 9 (2020): 3071. http://dx.doi.org/10.3390/app10093071.

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Façade elements are a building component that satisfies multiple performance parameters. Among other things, “advanced façades” take advantage of hybrid solutions, such as assembling laminated materials. In addition to the enhanced mechanical properties that are typical of optimally composed hybrid structural components, these systems are energy-efficient, durable, and offer lighting comfort and optimal thermal performance, an example of which is the structural solution developed in collaboration with the University of Zagreb and the University of Ljubljana within the Croatian Science Foundati

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Luo, Yongqiang, Ling Zhang, Xiaosong Su, Zhongbing Liu, Jinbu Lian, and Yongwei Luo. "Improved thermal-electrical-optical model and performance assessment of a PV-blind embedded glazing façade system with complex shading effects." Applied Energy 255 (December 2019): 113896. http://dx.doi.org/10.1016/j.apenergy.2019.113896.

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Dissertations / Theses on the topic "Structural Thermal Optical Performance Model"

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Seaman, Shane Thomas. "Material Related Effects on the Structural Thermal Optical Performance of a Thermally Tunable Narrowband Interferometric Spectral Filter." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/90799.

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High Spectral Resolution Lidar (HSRL) is a backscatter lidar technique that employs an optical/spectral filter to distinguish between particulate (Mie) and molecular (Rayleigh) backscattered light. By separating the two types of returns, higher accuracy measurements are possible that will enable improved climate models, air quality measurements, and climate forecasting. A spaceborne HSRL instrument can provide great impact in these areas by enabling near-continuous measurements across the Earth, however the optical filter technology has typically been too complex for reliable long-duration spa

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(8803139), Yubo Sun. "An Experimentally-Validated Coupled Opto-thermal-electrical Model for PV Performance and Reliability." Thesis, 2020.

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Photovoltaics (PV) are a renewable energy technology experiencing rapidly increasing commercial adoption today. Nonetheless, many proposed PV applications still require higher efficiencies, lower costs and comparable reliability to currently available in commercial devices (typically made from silicon). To enable the rigorous study of a much wider range of materials and novel design concepts, particularly those based on compound thin films, Concentrated Photovoltaics (CPV), cells with bifaciality, a comprehensive modeling framework is developed to couple photon absorption, carrier transport, p

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Book chapters on the topic "Structural Thermal Optical Performance Model"

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Nesterenkov, Petr Alexandrovich, and Alexander Gennadievich Nesterenkov. "Performance Improvement Study of Linear Photovoltaic Systems With Concentration of Solar Radiation." In Advances in Environmental Engineering and Green Technologies. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-5225-9420-8.ch007.

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A new type of linear cooled photodetectors is considered, of which in the focal region of the optical concentrator mirrors is installed an array of solar cells operating with the low-ratio solar concentration. This work is focused on the theoretical and experimental substantiation of the efficiency increase of photodetectors under conditions of an optimal combination between solar radiation concentration and heat transfer intensity of photovoltaic cells with heat carriers. The problem of obtaining a high temperature liquid due to the limitations of solar cells is solved by organizing the flow of fluid within the thermal collector channels in the focal region of an additional optical concentrator. A mathematical model of engineering characteristic calculation of the Ʌ - shaped photodetectors and cost calculation of electrical and thermal energy generation is presented. The research results are used in the development of industrial prototypes of photodetectors with a concentration of solar radiation and low production costs.

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J. Ojolo, Sunday, and Musbau G. Sobamowo. "Combating Greenhouse Effects through Biomass Gasification: A Focus on Kinetic Modeling of Combustion and Gasification Zones." In Next-Generation Greenhouses for Food Security. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97331.

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The prevalent challenges of global warming, food security, food production, crop production systems, environment control called for consideration and better utilization of green energy system such as biomass. The advanced thermo-chemical conversion of the renewable energy source which is aimed at production of optimal yield of energy has not been well understood. In order to have better physical insights into the detailed structure of the biomass burning process inside a solid bed, the kinetics of the biomass combustion and gasification must be properly analyzed. Consequently, improved kinetic models of the combustion and gasification zones in the thermochemical conversion system are very required. Therefore, the present study focuses on the development of improved kinetic modeling of the combustion and gasification zones in the biomass gasification system. The performance of the biomass gasifier system is evaluated through the equivalence ratio, the syngas composition, cold gas efficiency and lower heating value. Also, the effects of the equivalent ratio on gas compositions, the gasifier performance and the low heating value of the biomass are analyzed. From the analysis, it is established that the concentration of CO, H2 and CH4 in the gasifier decrease as the equivalence ratio increases. However, CO2 concentration increases with an increase in the equivalence ratio. The cold efficiency and LHV decreases as the equivalence ratio increases while the gas yield increases with an increase in the equivalence ratio. The quantity of gas produced increases as the amount of oxygen consumed increases. Also, the ratio of CO/CO2 decreases as the temperature of the reduction zone increases. Such analysis as presented in this work, is very useful as a time-saving and cost-effective tool for designing and optimizing the biomass gasifier. Therefore, it is evident that this work will play a significant role in the system design including analysis of the distribution of products and ash deposit in the downdraft gasifiers.

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Hermanns, Torsten, Ulrich Thombansen, Markus Nießen, Ulrich Jansen, and Wolfgang Schulz. "Modeling for Self-Optimization in Laser Cutting." In Advances in Systems Analysis, Software Engineering, and High Performance Computing. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-8823-0.ch019.

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Laser based cutting processes comprise a significant part of industrial manufacturing. To ensure a high level of cutting quality the process parameters have to be kept at the right values and within defined tolerances. In this context, the position of the laser beam focus is one of the most important parameters. However, due to thermal heating of optical elements the focal position shows a transient behavior. The handling of this focus shift is aggravated by the fact that the focal position is not directly detectable during processing. In this chapter an introduction in the topic of laser cutting is given. Subsequently, a closed mathematical formulation of laser fusion cutting is presented before a reduced model is developed that allows the determination of a focus shift by an experimentally accessible surrogate criterion. The theoretical predictions are finally validated by experimental results.

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Conference papers on the topic "Structural Thermal Optical Performance Model"

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Scola, Salvatore J., James F. Osmundsen, Luke S. Murchison, et al. "Structural-Thermal-Optical-Performance (STOP) model development and analysis of a field-widened Michelson interferometer." In SPIE Optical Engineering + Applications, edited by G. Groot Gregory and Arthur J. Davis. SPIE, 2014. http://dx.doi.org/10.1117/12.2061041.

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Wang, Ye, Charles-Alexis Asselineau, Joe Coventry, and John Pye. "Optical Performance of Bladed Receivers for CSP Systems." In ASME 2016 10th International Conference on Energy Sustainability collocated with the ASME 2016 Power Conference and the ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/es2016-59693.

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Bladed structures offer an approach to improve the efficiency of conventional concentrating solar power (CSP) cylindrical receivers, due to improved light-trapping via the cavity effect, and by allowing more tubes to be compressed into a smaller aperture, enabling the flux on the aperture to be increased without exceeding the peak flux limitation on individual tubes. In this paper, we present an optical model of a hypothetical bladed receiver mounted on the tower of the Sandia National Solar Thermal Test Facility (NSTTF). We examine the impact of receiver geometric parameters including receive

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Griffith, D. Todd, Adam C. Moya, Clifford K. Ho, and Patrick S. Hunter. "Structural Dynamics Testing and Analysis for Design Evaluation and Monitoring of Heliostats." In ASME 2011 5th International Conference on Energy Sustainability. ASMEDC, 2011. http://dx.doi.org/10.1115/es2011-54222.

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Heliostat vibrations can degrade optical pointing accuracy while fatiguing the structural components. This paper reports the use of structural dynamic measurements for design evaluation and monitoring of heliostat vibrations. A heliostat located at the National Solar Thermal Testing Facility (NSTTF) at Sandia Labs in Albuquerque, New Mexico, has been instrumented to measure its modes of vibration, strain and displacements under wind loading. The information gained from these tests will be used to evaluate and improve structural models that predict the motions/deformations of the heliostat due

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Chen, Chen, Zhidong Du, and Liang Pan. "Nanoscale Thermal Transport in Plasmonic Nanofocusing Structure With Strong Nonlocality." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37334.

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Nanoscale optical energy concentration and focusing is crucial for many high-throughput nanomanufacturing applications, such as material processing, imaging and lithography. The use of surface plasmons has resulted in the rapid development of nanofocusing devices and techniques at spatial confinements as good as a few nanometers associated with strong nonlocal plasmonic response. However, operations of these plasmonic nanofocusing structures usually require extremely high optical energy density at nanoscale, which leads to intense structure heating and causes unreliable device functions and sh

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Batson, Jennifer, and Ab Hashemi. "Precision Modular Thermal Deformation Modeling." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80171.

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The thermal response test of payloads in a vacuum chamber, commonly referred to as TVAC, is one of the most widely used performance characterizations of the payload in the aerospace industry. This verification test almost always requires modeling and validation of the performance of the payload under operational and off-design mission scenarios. To obtain high-precision performance predictions, the thermal analyst must accurately model the chamber environment, including any temperature variation along the shroud. Then, the subsystems that have already been modeled and tested are integrated int

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Laws, A. D., and Y. C. Lee. "Thermal and Structural Analysis of a Suspended Physics Package for a Chip-Scale Atomic Clock." In ASME 2007 InterPACK Conference collocated with the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ipack2007-33013.

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Power dissipation for chip scale atomic clocks (CSAC) is one of the major design considerations. 12 mW of the 30 mW power budget is for temperature control of the vertical-cavity surface-emitting laser (VCSEL) and the alkali-metal vapor cell, each must be maintained at 70±0.1°C even over large ambient temperature variations of 0°C to 50°C. The physics package of a CSAC device is composed of the cell, VCSEL and optical components. This package is heated to 70±0.1°C, but must be very well insulated to dissipate less than 12 mW. To create such a high level of insulation the physics package is enc

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Cao, M., S. Butler, J. T. Benoit, Y. Jiang, R. Radhakrishnan, and S. Bendapudi. "FEA Thermal Stress Analysis of Concentrating Photovoltaic (CPV) Cell." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-15662.

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Steady-state and residual FEA thermal stress analysis of a Concentrating Photovoltaic (CPV) cell module is performed in this study. This investigation covers the nominal and extreme operating conditions, including system startup and shutdown. The physical properties of different epoxies were substituted into the model and the model results were used to identify the optimal bonding materials. Different thermal boundary conditions were evaluated for optimal performance. As the first step of module life prediction, residual stresses corresponding to different temperatures were calculated. The ana

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Marotta, Paul J., and Basil N. Antar. "Small Modular Reactor Thermal Performance Improvement With Addition of a High Temperature Gas Reactor Superheater." In ASME 2014 Small Modular Reactors Symposium. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/smr2014-3374.

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Reheating steam from a Small Modular Reactor (SMR) is explored in order to increase efficiency and power output. A thermal source in the form of a High Temperature Gas Reactor (HTGR) is considered. Engineering challenges include proof-of-principle, reactor sizing, evaluation, and feasibility. The proposed thermodynamic process modifications have been evaluated for a range of inlet steam quality conditions. The evaluation of the steam tube dimensions and number of optimal tubes have been calculated utilizing the so-called Log Mean Temperature Difference method. Subsequently, the performance of

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Fan, Jiang, Le Han, Rongqiao Wang, Xiuli Shen, Weiwei Zeng, and Zhipeng Chang. "Research on Structural Design and Optimization of Turbine Blade Shroud." In ASME 2012 Gas Turbine India Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gtindia2012-9590.

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An automatic optimization approach for the structural design of turbine blade shroud is presented and applied to the optimal design of a zigzag shroud in this paper. It integrates commercial CAD and CAE softwares into optimization procedure iSIGHT. According to the normal rules of the shroud design and experience, this paper advises a zigzag shroud which is fit for a kind of turbine blade. The parametric model of the shroud is established and the pre-twist angle parameter is taken into consideration. The structural intensity performance of the shroud, which is used to compute the optimal objec

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Baumer, Stefan. "Beyond ToleranceAanalysis - Structural Thermal Optical Performance Analysis." In International Optical Design Conference. OSA, 2017. http://dx.doi.org/10.1364/iodc.2017.itu1a.7.

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