Parametric study and optimization of dimpled tubes based on Response Surface Methodology and desirability approach

Lei, Xiangshu; Shuang, J.J.; Yang, Peng; Liu, Yingwen

doi:10.1016/j.ijheatmasstransfer.2019.118453

Cited by 45 publications

(9 citation statements)

References 24 publications

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“…Increasing the weightage drives the output response towards the desired goal. Weightage of 3 was provided for solar weighted absorption fraction [35]. Desirability ranges from a minimum of zero to a maximum one.…”

Section: Optimization Of Variables Using Desirability Functionmentioning

confidence: 99%

Investigation on influence of antimony tin oxide/silver nanofluid on direct absorption parabolic solar collector

Sreekumar

Joseph

Kumar

et al. 2020

Journal of Cleaner Production

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This paper discusses the synthesis and characterization of a novel hybrid nanofluid and its performance analysis on a parabolic trough direct absorption solar collector. Broadening the absorption spectra of working fluid using nanoparticles is the new research revolution for increasing the volumetric solar absorption efficiency. It is reported that plasmonic silver nanoparticles have higher absorption in visible spectra while antimony doped tin oxide has an absorption peak in the near-infrared region. Hence, antimony tin oxide/silver hybrid nanoparticle with broad spectral absorptivity was synthesized. Optimization of the nanofluid composition performed using response surface methodology yielded an optimized mass fraction of antimony tin oxide and surfactant, sodium dodecyl sulfate, as 0.1% each. The solar weighted absorption fraction of optimized nanofluid was obtained as 90.12%. Performance evaluation of the solar collector was based on ASHRAE standards 93-2010. The optical efficiency of the parabolic collector was calculated to be 75%. The maximum thermal efficiency obtained by the optimized nanofluid applied parabolic trough direct absorption solar collector was 63.5% at a flow rate of 0.022 kgs-1 and the highest exergy efficiency obtained was 5.6%. Thermal and exergy efficiency was observed to increase with increase in flow rate.

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Section: Optimization Of Variables Using Desirability Functionmentioning

confidence: 99%

Investigation on influence of antimony tin oxide/silver nanofluid on direct absorption parabolic solar collector

Sreekumar

Joseph

Kumar

et al. 2020

Journal of Cleaner Production

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“…Hence, it is necessary to determine which parameter exhibits the most effect on responses. In this study, the ANOVA technique is adopted to quantify the significance of parameters and subsequently utilized for parameter selection [26,27]:…”

Section: Optimation Strategymentioning

confidence: 99%

A General Integrated Method for Design Analysis and Optimization of Missile Structure

Wang

Yang²,

Guo

et al. 2019

Algorithms

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In the demonstration phase of a missile scheme, to obtain the optimum proposal, designers need to modify the parameters of the overall structure frequently and significantly, and perform the structural analysis repeatedly. In order to reduce the manual workload and improve the efficiency of research and development, a general integrated method of missile structure modeling, analysis and optimization was proposed. First, CST (Class and Shape transformation functions) parametric method was used to describe the general structure of the missile. The corresponding software geometric modeling and FEM (Finite Element Method) analyzing of the missile were developed in C/C++ language on the basis of the CST parametric method and UG (Unigraphics) secondary development technology. Subsequently, a novel surrogate model-based optimation strategy was proposed to obtain a relatively light mass missile structure under existing shape size. Eventually, different missile models were used to verify the validity of the method. After executing the structure modeling, analysis and optimization modules, satisfactory results can be obtained that demonstrated the stability and adaptability of the proposed method. The method presented saves plenty of time comparing to the traditional manual modeling and analysis method, which provides a valuable technique to improve the efficiency of research and development.3D modeling program based on the UG secondary development technology, which has improved the modeling efficiency. Wang et al. [4] used the technology of UG/KF secondary development for the automatic modeling of the wind turbine blades, and the aerodynamic characteristics of the impeller were analyzed by the Fluent software. Moreover, He et al. [5] implemented the parametric modeling of the blended-wing-body underwater glider structure by using UG secondary development technology and studied its structural performance with ANSYS. Therefore, UG is considered as an excellent tool that can realize the integration of modeling and simulation.Meanwhile, airfoils have been parameterized in a wide variety of ways. Among them, CST is considered to be a more effective method, which can represent the different types of geometries in a generic way with fewer parameters. Kulfan and Bussoletti [6] proposed a parameterization method that based on class and shape transformation functions, which has the advantages of high precision and fewer variables. The CST method is a powerful and versatile means to describe complex aeronautical shapes ranging from 2D airfoils to 3D geometries of aircraft using analytical functions. Since it has been introduced, this parameterization method has been the subject of several studies [7]. Marco Ceze of the University of Michigan studied the characteristics of CST parameterization and found that the ill-conditioning of parameterization when fitting airfoil with high-order Bernstein polynomials [8]. Straathof et al. proposed a parameterization method that used a combination of Bernstein polynomials and B-splines to allow...

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“…In addition, they proposed correlations to predict the Nusselt number and friction factor. Similarly, Eiamsa-ard et al 6 Xie et al 7 Cheragh et al, 8 Zheng et al, 9 Dagdevir et al, 10 Dedeyne et al, 11 and Lei et al, 12 have investigated different dimpled or protruded tubes.…”

Section: Introductionmentioning

confidence: 99%

Research on prediction model of forming mechanical behavior of the dimpled tube based on the response surface methodology

Xie

Guo

Gong

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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A new multi-pitch extrusion machine for producing the enhanced heat transfer tube with dimples is proposed for the first time. The goal of the present study is to investigate the forming mechanism and establish a mechanical behavior prediction model for dimpled tubes. The response surface methodology with central composite design was adopted to identify the relationships between independent variables (extrusion depth, pitch, and teeth radius) and responses (stress, plastic strain, and excursion force). The validity of the finite element model and prediction model was verified experimentally and by the analysis of variance technique. The results show that dimples and protrusions are caused by the tube wall bending inward and outward, respectively. The stress, plastic strain, and excursion force increased with increasing extrusion depth, and decreased with increasing extrusion pitch. The changes in teeth radius had no influence on the excursion force.

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Parametric study and optimization of dimpled tubes based on Response Surface Methodology and desirability approach

Cited by 45 publications

References 24 publications

Investigation on influence of antimony tin oxide/silver nanofluid on direct absorption parabolic solar collector

Investigation on influence of antimony tin oxide/silver nanofluid on direct absorption parabolic solar collector

A General Integrated Method for Design Analysis and Optimization of Missile Structure

Research on prediction model of forming mechanical behavior of the dimpled tube based on the response surface methodology

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