among the intermolecular interactions, the casimir and van der waals forces are the most important forces that highly affect the behavior of nanostructures. this paper studies the effect of such forces on the adhesion of cantilever freestanding nanostructures. the nanostructures are made of a freestanding nano-beam which is suspended between two upper and lower conductive surfaces. the linear s...

Among the intermolecular interactions, the Casimir and van der Waals forces are the most important forces that highly affect the behavior of nanostructures. This paper studies the effect of such forces on the adhesion of cantilever freestanding nanostructures. The nanostructures are made of a freestanding nano-beam which is suspended between two upper and lower conductive surfaces. The linear s...

The photosynthetic microorganism growth description is usually based on the so-called microbial kinetics, i.e. on the lumped parameter models (LPM) describing the photosynthetic response in small cultivation systems with a homogeneous light distribution [3, 6]. However, there is an important phenomenon, the so-called flashing light enhancement, which demands some other model than it residing in...

Virtual prototyping of power electronics systems can enable rapid and iterative design process, and can satisfy the need for higher power density. Thermal modelling is a key part in the multi-physics virtual prototyping. In this paper, the T-type steady-state lumped-parameter model (LPM) for a naturally cooled heat sink with a power device on top is established. Empirical equations for the conv...

Abstract The hydraulic transients are obvious during the operation and adjustment of large-scale district heating (DH) network. Hydraulic transient modeling simulation methods can provide basis for efficient DH In this paper, two models, distributed parameter model (DPM) lumped (LPM), were established Efficient numerical algorithms presented models. proposed DPM LPM both applied to a network si...

BACKGROUND Hemodynamic simulation for quantifying fractional flow reserve (FFR) is often performed in a patient-specific geometry of coronary arteries reconstructed from the images from various imaging modalities. Because optical coherence tomography (OCT) images can provide more precise vascular lumen geometry, regardless of stenotic severity, hemodynamic simulation based on OCT images may be ...

Despite the many advantages, ejector refrigeration systems have not been able to penetrate market because of two prevailing reasons: low coefficient performance and relevant influence operation on whole system. Indeed, depends local flow phenomena occurring within ejector. Thus, improving relies understanding fluid dynamic at "component-scale" integrating such information "system-scale". This p...

background and objective: cerebral arteriovenous malformation (cavm) hemodynamic is disease condition, results changes in the flow and pressure level in cerebral blood vessels. measuring flow and pressure without catheter intervention along the vessel is big challenge due to vessel bifurcations/complex bifurcations in arteriovenous malformation patients. the vessel geometry in cavm patients are...

The motion of drill strings is modeled in the drilling geotechnological wells mining industry by Lumped-Parameter Method (LPM). This method widely used structural mechanics and most justified modeling dynamic systems with a variable structure. On example horizontal wells, longitudinal vibrations string static compressive load at left end are considered [1]. contact interaction borehole walls in...

While numerical simulation is generally regarded as indispensable for wavefront engineering tasks such as OPC decoration and phase-shift mask design, full resist models are rarely used for this purpose. By “full resist models”, we mean models derived from a physical, mechanistic description of the chemical response of the photoresist to exposure and the subsequent PEB and develop processes. Mor...