Abstract: There are directly effects on diesel’s Sabah cycle of common rail pressure, at the same time, the common rail pressure also affects the property indices: pre-expansion ratio, thermal efficiency, exergy efficiency and average valid pressure. It takes Weicai National VI diesel as an instance, describes the simplifies, basic presumptions and formulas of inner cylinder thermal process, and mainly designs and researches on the property indices of Sabah Cycle in different common rail pressure conditions, includes: the rail pressure effects towards pressure inner cylinder, combustion temperature, etc.; and takes oil consumption as the optimizing target, optimized and gained the MAP of rail pressure, the oil consumption after optimizing are satisfied with the design requirements.Abstract: There are directly effects on diesel’s Sabah cycle of common rail pressure, at the same time, the common rail pressure also affects the property indices: pre-expansion ratio, thermal efficiency, exergy efficiency and average valid pressure. It takes Weicai National VI diesel as an instance, describes the simplifies, basic presumptions and formulas ...Show More
Abstract: Medical diagnosis with optical techniques is favorable due to its safe and painless features. Every tissue type can be distinguished by its optical absorption and scattering properties that are related to many physiological changes and considered to be very important signs for tissue heath. Characterizing light propagation in the human brain tissues is a vital issue in many diagnostic and therapeutic applications. In this work, light propagation in different brain tissues in normal and coagulated state was investigated. A Monte-Carlo simulation model was implemented to obtain spatially resolved steady state diffuse reflectance profiles of the examined tissues. Furthermore, the diffusion equation was solved to create images presenting the optical fluence rate distribution at the tissue surface using the finite element method. The proposed diffuse reflectance curves and fluence rate images show different features regarding tissue type and condition that promises to be effective in medical diagnosis.Abstract: Medical diagnosis with optical techniques is favorable due to its safe and painless features. Every tissue type can be distinguished by its optical absorption and scattering properties that are related to many physiological changes and considered to be very important signs for tissue heath. Characterizing light propagation in the human brain tissue...Show More
Abstract: In this study, we have developed an analytic model to analyze the influence of velocity slip parameter and heat source on magneto hydrodynamics (MHD) heat and mass transfer of a Jeffery fluid which conducts electricity on a stretching surface. Both temperature and concentration are assumed to be in power low form. The existing partial differential equations (PDEs) is changed into a structure of ordinary differential equations (ODE's) by using a similarity variable. For computing the transformed equation, we used an analytical method named as Optimal Homotopy Asymptotic Method (OHAM). The influence of different dimensionless parameters on the velocity, temperature, concentration and as well as the coefficient of skin friction, Nusselt number and Sherwood number were evaluated using graphs and tables. It is observed that the velocity slip parameter (k) and the Deborah number (β) have opposite effects on the velocity distributions of the fluid flow. However, the effects of heat source parameter (δ) and thermal radiation parameter (R) on the temperature profile is similar. To be confident about the accuracy of this analytic method, the values of Nusselt number (Mux) solved numerically is compared with the previously published works done before and the comparison is found to be in a very good agreement.Abstract: In this study, we have developed an analytic model to analyze the influence of velocity slip parameter and heat source on magneto hydrodynamics (MHD) heat and mass transfer of a Jeffery fluid which conducts electricity on a stretching surface. Both temperature and concentration are assumed to be in power low form. The existing partial differential ...Show More