سعید اسدی

[ 1 ] - شبیه سازی تقطیر چند جزئی پیوسته مواد موثره اسانس زیره سبز و مقایسه آن با نتایج آزمایشگاهی

در این پژوهش غنی سازی ماده موثره اسانس زیره سبز به وسیله شبیه سازی عملیات تقطیر چند جزئی پیوسته، مورد مطالعه قرار گرفته است. در شبیه سازی از روش نقطه حباب و الگوریتم Wang-Henke استفاده گردیده است. در این روش روابط MESH (روابط موازنه جرم و تعادل فازی برای هر جزء، مجموع اجزاء مولی و موازنه انرژی برای هر مرحله تعادلی) توسط روش ماتریس سه قطری حل شده است. همزمان با به دست آوردن نتایج شبیه سازی، نسبت...

[ 2 ] - Statistical Modeling for Oblique Collision of Nano and Micro Droplets in Plasma Spray Processes

Spreading and coating of nano and micro droplets on solid surfaces is important in a wide variety of applications including plasma spray coating, ink jet printing, DNA synthesis and etc. In spraying processes, most of droplets collide obliquely to the surface. The purpose of this article is to study the distribution of nano and micro droplets spreading when droplets impact at an oblique a...

[ 3 ] - Multicomponent Distillation Modeling of An Essential Oil by the SRK and PSRK State Equations

The equation of state Soave-Redlich-Kwong (SRK) and its modification (predictive SRK or PSRK) are applied to simulate multicomponet distillation, which separate main component of spearmint essential oil. The simulation model is based on bubble point method, and the Wang-Henke algorithm. Spearmint essential oil is considered in the study and the original experimental data were obtained f...

[ 4 ] - Modeling of splat particle splashing data during thermal spraying with the Burr distribution

Splashing of splat particles is one of the most important phenomena in industrial processes such as thermal spray coating. The data relative to the degree of splashing of splats sprayed with a normal angle are commonly characterized by the Weibull distribution function. In this present study, an effort has been made to show that the Burr distribution is better than the Weibull distribution for ...

[ 5 ] - SPREAD DATA ANALYSIS OF ALUMINUM OXIDE SPLATS REINFORCED WITH CARBON NANOTUBES

Coating of a surface by droplet spreading plays an important role in many novas industrial processes, such as plasma spray coating, ink jet printing, nano safeguard coatings and nano self-assembling. Data analysis of nano and micro droplet spreading can be widely used to predict and optimize coating processes. In this article, we want to select the most appropriate statistical distribution for ...

[ 6 ] - شبیه سازی برخورد نانو قطره به سطح مورب در فرآیند ایجاد پوشش های نانویی توسط دینامیک مولکولی

پوشش دادن سطوح توسط نانوذرات، کاربردهای وسیعی در صنعت دارد. بسیاری از سطوح بصورت مورب در مقابل نازل پاشش قرار میگیرند که باعث برخورد مایل نانو قطره با سطح میشود. در این مطالعه، توسط شبیهسازی دینامیک مولکولی، برخورد نانو قطره با یک سطح مورب بررسی شده و میزان پخش قطره روی سطح مورب و در زوایا و سرعتهای برخورد متفاوت، مورد تجزیه و تحلیل قرار گرفته است. نتایج نشان میدهد که نسبت پخش شدن نانو قطر...

[ 7 ] - Simulation of nanodroplet impact on a solid surface

A novel computational fluid dynamics and molecular kinetic theory (CFD-MK) method was developed to simulate the impingement of a nanodroplet onto a solid surface. A numerical solution of the Navier–Stokes equation using a volume-of-fluid (VOF) technique was used to model nanodroplet deformation. Dynamic contact angle during droplet impact was obtained by molecular kinetic theory. This dynamic c...

[ 8 ] - A New Model Selection Test with Application to the Censored Data of Carbon Nanotubes Coating

Model selection of nano and micro droplet spreading can be widely used to predict and optimize of different coating processes such as ink jet printing, spray painting and plasma spraying. The idea of model selection is beginning with a set of data and rival models to choice the best one. The decision making on this set is an important question in statistical inference. Some tests and criteria a...

[ 9 ] - Simulation of nanodroplet impact on a solid surface

A novel computational fluid dynamics and molecular kinetic theory (CFD-MK) method was developed to simulate the impingement of a nanodroplet onto a solid surface. A numerical solution of the Navier–Stokes equation using a volume-of-fluid (VOF) technique was used to model nanodroplet deformation. Dynamic contact angle during droplet impact was obtained by molecular kinetic theory. This dynamic c...