Hui Lu, Xinyue Duan, Minghai Xu^*, Liang Gong, Bin Ding

CMES-Computer Modeling in Engineering & Sciences, Vol.123, No.3, pp. 1193-1204, 2020, DOI:10.32604/cmes.2020.08989 - 28 May 2020

Abstract In micro-manufacturing, roughness is unavoidable due to the tolerance of micro-machining methods. Roughness in microchannel could have a significant influence on flow and heat transfer since the size of microchannel is very small. In our work, roughness is modeled as a superposition of waves. A simple Fourier series method is proposed to construct the rough surface. With this method, roughness is constructed on the bottom of the rectangular microchannel which has a hydraulic diameter of 0.5 mm. Two important parameters during roughness construction, triangulate size and correlation length are studied under the same relative roughness More >

Sung Yun Hann¹, Haitao Cui¹, Timothy Esworthy¹, Xuan Zhou¹, Se-jun Lee¹, Lijie Grace Zhang^1,2,3,4,*

Molecular & Cellular Biomechanics, Vol.16, Suppl.2, pp. 76-76, 2019, DOI:10.32604/mcb.2019.07314

Abstract The vascularization is the most significant to achieve efficient supplement of the nutrients and oxygen for tissue and organ regeneration. However, there is a remaining challenge to fabricate a durable and functional vascularized tissue. Currently, 3D printing has emerged as a promising technique to fabricate vascular networks in many studies due to its superior controllability, reproducibility, and repeatability. In the current study, the main objective is to utilize an advanced dual 3D printing technique including stereolithography (SLA) and fused deposition modeling (FDM) to create a biomimetic bone tissue with perfusable vascular networks. Specifically, the vascularized… More >

Chang-Chun Lee

The International Conference on Computational & Experimental Engineering and Sciences, Vol.22, No.4, pp. 193-193, 2019, DOI:10.32604/icces.2019.05407

Abstract Over the past half-century, the pivotal concepts and theories of solid mechanics was maturely developed to describe the mechanical responses of meso-scaled structure. From the viewpoint of traditional solid mechanics, the major concerns of developed analytic solutions were to investigate the mechanical responses of bulk-scaled material. However, the abundance of novel nano/micro process and corresponding material structures with unique mechanical behavior revealed that the limitation of traditional solid mechanics. For this reason, this research is mainly devoted to review the application of computational mechanics on nano/micro structures. As a result of this review paper, application… More >

Chang-Chun Lee^1,*, Nien-Ti Tsou², Taek-Soo Kim³

CMES-Computer Modeling in Engineering & Sciences, Vol.120, No.2, pp. 235-237, 2019, DOI:10.32604/cmes.2019.07807

Abstract This article has no abstract. More >

Chang-Chun Lee^1,*, Pei-Chen Huang¹

CMES-Computer Modeling in Engineering & Sciences, Vol.120, No.2, pp. 239-260, 2019, DOI:10.32604/cmes.2019.06859

Abstract This research reviews the application of computational mechanics on the properties of nano/micro scaled thin films, in which the application of different computational methods is included. The concept and fundamental theories of concerned applications, material behavior estimations, interfacial delamination behavior, strain engineering, and multilevel modeling are thoroughly discussed. Moreover, an example of an interfacial adhesion estimation is presented to systematically estimate the related mechanical reliability issue in the microelectronic industry. The presented results show that the peeled mode fracture is the dominant delamination behavior of layered material system, with high stiffness along the bonding interface. More >

J.N. Chung^a,†, Tailian Chen^b, Shalabh C. Maroo^c

Frontiers in Heat and Mass Transfer, Vol.2, No.2, pp. 1-19, 2011, DOI:10.5098/hmt.v2.2.3004

Abstract Recent research progress in the area of nano/micro scale nucleate boiling is reviewed and an up-to-date summary is provided with a focus on the advances of fundamental boiling physics. This review examines nano/micro scale pool boiling experimental and theoretical/numerical work reported in the open literature. On the experimental side, the topics covered are moving contact line, critical heat flux, boiling curve, nucleation, single bubble boiling cycle, bubble coalescence boiling cycle, heater size effect, nanofluid, and nanoscale-structured heater surface. For the theoretical/numerical work, continuum mechanics modeling of the micro-region and molecular dynamics modeling of the nano-region More >

Xiaowei Zeng¹

CMES-Computer Modeling in Engineering & Sciences, Vol.74, No.3&4, pp. 183-202, 2011, DOI:10.3970/cmes.2011.074.183

Abstract This paper presents an atomistic field theory and its application in modeling and simulation of nano/micro materials. Atomistic formulation and finite element implementation of the atomistic field theory is briefly introduced. Numerical simulations based on the field theory are performed to investigate the material behaviors of bcc iron at coarse-grained scale and we have obtained the mechanical strength and elastic modulus, which are in good agreement with results by first principles calculations. Also the nanoscale deformation and failure mechanism are revealed in bcc iron nanorods under simple tension. It is interesting to observe that under More >