Recent progress in axisymmetric drop shape analysis software

A program called axisymmetric liquidfluid interfaces alfi was introduced by. One of the key elements is the modularization of the software, since a generic software package is not suitable for all experimental situations. This developers tip will answer many of the common questions regarding the modeling of shafts in particular how to perform an axisymmetric analysis and interpret the results. Axisymmetric solid with nonaxisymmetric load using matlab. A new method based on the younglaplace equation for measuring contact angles and surface tensions is presented. The key property of a functioning lung surfactant is its surface tension, which can reach extremely low values below 1 mjm2. The profile of the drop, which is determined by the balance between gravity and surface forces, is easily defined. Recent progress in axisymmetric drop shape analysis adsa article in advances in colloid and interface science 121. Several configuration of interest will be considered and presented systematically. Drop shape analysis sessile drop adsa coal ash slag abstract a new method based on the younglaplace equation for measuring contact angles and surface tensions is presented. Shape and surface tension are linked to a shape parameter differential geometry. The pendent drop method for surface tension measurement consists in analysing the shape of an axisymmetric drop hanging from a capillary tube.

The system considered consists of a twophase ternary at fixed temperature. Abaqus users axis of symmetry in axisymmetric analysis. Request pdf recent progress in axisymmetric drop shape analysis adsa. Lyon, master of science utah state university, 2010 major. Stateoftheart axisymmetric drop shape analysis adsa. When appropriate, the calculated drop contour is extended by mirror symmetry so that reflection of the drop. Recent progress in axisymmetric drop shape analysis adsa. In the work reported here, a more accurate and less subjective method is obtained by redeveloping the whole approach in the framework of axisymmetric drop shape analysis adsa. Diagram of the closedloop axisymmetric drop shape analysis adsa feedback control system integrated into the constrained drop surfactometer cds. Recent developments in image analysis and processing employed by axisymmetric drop. The more recent snake approach dropsnake method 7 unifies the global form of a. Application to circular reservoirs cristiano yudok chung rodrigues abstract the present paper addresses the linear analysis of axially symmetric structures of thin shell subjected to axisymmetric loads. You should read the online help in build about introduction to analysis go to the analysis and press f1.

The linear triangular shape functions are illustrated below. Development of axisymmetric drop shape analysis no apex adsana ali kalantarian doctor of philosophy graduate department of mechanical and industrial engineering university of toronto 2011 the main purpose of this thesis is the development of a new methodology of contact angle measurement called adsana axisymmetric drop shape analysis. Nonaxisymmetric shapes of a rotating drop in an immisc. Provides assistance for calculating contact angles and surface tensions. The shape and size of the drop for different pairs of contact angle and drop volume were. The axisymmetric option in phase2 allows you to perform a threedimensional analysis. Recent progress in image analysis and data acquisition systems makes it possible to digitalize drop. An objects degree of rotational symmetry is the number. Axisymmetric definition of axisymmetric by the free. In a typical axisymmetric extrusion analysis, only one half of a longitudinal section taken through the centre line of the extruder barrel is defined due to the symmetry of the problem, and axisymmetric. Drop shape analysis is based on a first order perturbation solution of the younglaplace equation for axisymmetric sessile drops. Axisymmetric drop shape analysis adsa tm is a technique to determine liquidfluid interfacial tension and contact angle from the shape of axisymmetric menisci, i. This software estimates contact angles via the guidance provided by the global drop contour.

Adsap is defined as axisymmetric drop shape analysis by profile rarely. Axisymmetric drop shape analysis for estimating the surface. One of the key elements is the modularization of the software, since a generic software package. This software is an addon for the public domain image processing software imagej which matches a theoretical profile to the contour of a pendent drop. As a result, a more versatile image analysis module is introduced. In recent years, the use of automated computer software. World leading drop shape analysis system c60 contact angle. The surface tension is obtained from the profile of the drop. How is axisymmetric drop shape analysis by profile abbreviated. The drop shape analysis relies on younglaplace equation eq. Lowbond axisymmetric drop shape analysis for surface tension and contact angle measurements of sessile drops. These methods have been implemented as a java plugin for the imagej software and we make it freely available.

Axisymmetric drop shape analysis for estimating the surface tension of cell. Adsap stands for axisymmetric drop shape analysis by profile. Axisymmetric drop shape analysis adsa is a commonly used drop shape technique. Jennings and pallas 10 dein recent years, the use of automated computer software veloped a similar method, built on rotenberg and col. An image of the drop is recorded with the help of a camera and transferred to the drop shape analysis software. The shape optimization of axisymmetric structures based on. A numerical method is developed for shape optimization of axisymmetric structures based on choosing the sets of fictitious loads acting. Neumann, recent progress in axisymmetric drop shape anal.

The definition of axisymmetric is that the 2d slice can be rotated around an axis to create a 3d volume. Axisymmetric drop shape analysis for estimating the. Add a small part of the axisymmetric section in the 3d model to. Advantages, limitations and error estimation of mixed. I was wondering if you had done any grid independence on both the 2d and 3d cases. But for an analysis to qualify for axisymmetric, the loads also need to be revolved around the center axis. Select new in analysis set, select the nx nastran from the analysis program drop down list select static from the analysis type drop down list. These are, in fact, all the nonzero strain components possible in an axisymmetric. How does analysing one half give the response of the entire body. Identify axisymmetric and non axisymmetric sections of the model 2. Finally, set the planar behavior axisymmetric, plane stress, plane strain, etc. Axisymmetric analysis a problem in which the geometry, loadings, boundary conditions and materials are symmetric with respect to an axis is one that can be solved as an axisymmetric problem instead of as a three dimensional problem to illustrate this type of analysis.

Abaquscae axisymmetric tutorial problem description a round bar with varying diameter has a total load of n applied to its top face. In this study, axisymmetric drop shape analysis adsa was applied to investigate the ability of a hybrid technique i. Apart from the axisymmetric shapes at slow rotation rates, the threelobed family was the easiest to obtain. The solution of the adsap program yields not only the interfacial. Axisymmetric finite element modeling for the design and analysis of cylindrical adhesive joints based on dimensional stability by paul e. What is the logic behind axisymmetric analysis in fea. Rotational symmetry, also known as radial symmetry in biology, is the property a shape has when it looks the same after some rotation by a partial turn. Axisymmetric finite element modeling for the design and. In recent years, the pendant drop method has been widely used as an.

Adsa axisymmetric dropshape analysis acronymfinder. In this approach, a firstorder perturbation technique helps to analytically solve the younglaplace equation according to photographic images of axisymmetric sessile drops. Recent progress in axisymmetric drop shape analysis. Recently, a new method has been proposed to measure the surface tension of cell aggregates. Lowbond axisymmetric drop shape analysis for surface. Axisymmetric analysis a problem in which the geometry.

Dynamic interfacial tension measurement method using. Nthe aerospace industry, the stress analysis of complex axisymmetric structures subjected to thermal and mechanical loads is of. Deepdyve is the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. The software consists of image analysis and numerical schemes.