An analysis is performed to study the unsteady thin film flow of a second grade fluid over a vertical oscillating belt. The governing equation for velocity field with appropriate boundary conditions ...is solved analytically using Adomian decomposition method (ADM). Expressions for velocity field have been obtained. Optimal asymptotic method (OHAM) has also been used for comparison. The effects of Stocks number, frequency parameter and pressure gradient parameters have been sketched graphically and discussed.
This paper explores the significant effects of convective transport of ions in the presence of a variable magnetic field over three-dimensional pressure driven electro-viscous fluid flow. The ...physical phenomena is modeled using the basic governing equations of fluid flow, as well as the magnetic equations, the Poisson equations, the Nernst Planck equations, and the energy equations. The governing equations have been transferred to the system of ODEs through a well-known similarity transformation techniques, and then solved numerically by parametric continuation method for the different values of the controlling parameters. The results have been displayed quantitatively in the table as well as graphically. In addition, the entropy of the system is modeled and solved numerically to demonstrate the performance of the system. The behavior of the electroviscous fluid flow has been observed for various physical parameters such as velocity profile, temperature profile, magnetic field, entropy generation and found that the electroviscous fluid flow is a control phenomenon to normalize the flow properties. For the validity of the numerical scheme, the solution of the proposed model is compared with the solution by BVP4C.
•All PDEs equations have converted into ODEs by using similarity transformations.•Flow field, Variable Magnetic Field, Temperature distribution, Skin friction, Nusselt number and ions distribution with the variation of natural parameters has studied.•Graphical and numerical results have discussed keeping in mind the physical phenomenon.•The problem analysis has performed through parametric continuation Method (PCM) and for accuracy the results has compared with numerical results.
IntroductionNeonatal jaundice is a common cause of concern in immediate newborn period for parents as well as for the caregivers. Babies with visible jaundice are identified by the healthcare ...provider, and blood samples are sent for confirmation. Clinical expertise varies from person to person and may lead to sending excessive blood sampling. Obtaining blood bilirubin samples is a painful procedure; it predisposes the baby to infections and requires skilled health personnel. Moreover, laboratory tests are costly and time consuming, leading to unnecessary delays in commencing phototherapy and discharge from hospital. Transcutaneous bilirubinometer has been in use for a long time as screening tool in postnatal wards. With passage of time, its accuracy and validity have improved tremendously.MethodologyWe aim to implement a quality improvement initiative to reduce the number of blood bilirubin samples using transcutaneous bilirubin (TcBR) nomogram in full-term, low-risk babies who are born at our hospital and are admitted in postnatal ward after birth. Using preanalysis and postanalysis study design, this study will be performed in two phases of 6 months each. Data regarding total number of admissions in postnatal wards, demographics, serum bilirubin(TSBR) samplings and need for phototherapy will be recorded in both phases. TcBR will be done and recorded in postimplementation phase.Analysis and resultsComparisons between the two groups will be made. Primary outcome will be reduction in blood bilirubin samples for TSBR after the implementation of TcBr protocol. The proportion of infants having TSBR performed in both periods will be compared. Crude sampling cost of TSBR will be obtained from laboratory, and cost comparison between two phases will be done to look for difference.
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In this paper, a viscous fluid is considered between two horizontal and infinite squeezing plates. The unsteady equations of mass and momentum conservation is coupled with the variable magnetic ...field and energy equations. The governing system of equations along with entropy generation is solved by the Parametric Continuation Method (PCM). A parametric investigation is plotted through graphs for the velocity field and magnetic field components. Also, the entropy generation due to heat transfer, magnetic field and fluid friction is studied through graphs and tables. It is derived that an increase in magnetic Reynolds number, squeezing number or Hartman number increases the fluid temperature. The magnetic field components are also increasing with increase in magnetic flux. It is also derived that an increase in the rate of momentum diffusion increases the entropy generation and Bejan number due to maximum disorderness of molecules near the plates. Applications of the study include automotive magneto-rheological shock absorbers, novel aircraft landing gear systems, heating-up or cooling processes, biological sensor systems and biological prosthetic etc.
The kernel weighted fuzzy
c
-means clustering with local information (KWFLICM) algorithm performs robustly to noise in research related to image segmentation using fuzzy
c
-means (FCM) clustering ...algorithms, which incorporate image local neighborhood information. However, KWFLICM performs poorly on images contaminated with a high degree of noise. This work presents a kernel possibilistic fuzzy
c
-means with a local information (KWPFLICM) algorithm to overcome the noise-related deficiencies of KWFLICM. The proposed approach leverages the robustness to noise of the kernel possibilistic fuzzy
c
-means (KPFCM) algorithm, which is a hybridization of the kernel possibilistic
c
-means (KPCM) and kernel FCM (KFCM), rather than relying on the kernel FCM algorithm. Experiments performed on the various types of images degraded by different degrees of noises prove that proposed algorithm is effectual and efficient, and more robust to noise.
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Free surface flow of an incompressible viscous fluid over a porous rotating disk with heat and mass transfer with radiative heat flux is studied. The effect of the natural parameters such as Dufour ...number, Soret number, Prandtl number, radiation parameter, Suction parameter and Schmidt number on the fluid properties are determined and shown graphically. The corresponding skin friction coefficient, the Nusselt number and the Sherwood number are also calculated and displayed in tables showing the effects of various parameters on velocity profile. Individual averaged square residual errors as well as optimal values of converges control parameterconvergence control parameters are also discussed in detail. It is found that Dufour and radiation effects cause reductions in the fluid temperature. The effect of suction decreases the velocities, temperature and concentration profiles significantly in boundary layer. The total averaged squared errors and average squared residual errors are further reduced as the order of approximation is increased. This analysis was performed by means of the Homotopy Analysis Method (HAM) and for validity it is compared with the results of BVP4C numerical routine.
In this work, the mathematical modeling of unsteady second grade fluid in a wire coating process inside a straight annular die is developed in the form of a partial differential equation with ...non-homogenous boundary conditions. An exact solution is obtained for the governing equation by using the method of separation of variables.
Modern optical fibers require double-layer coating on the glass fiber to provide protection from signal attenuation and mechanical damage. The most important plastic resins used in wires and optical ...fibers are plastic polyvinyl chloride (PVC) and low-high density polyethylene (LDPE/HDPE), nylon and Polysulfone. In this paper, double-layer optical fiber coating is performed using melt polymer satisfying PTT fluid model in a pressure type die using wet-on-wet coating process. The assumption of fully developed flow of Phan-Thien-Tanner (PTT) fluid model, two-layer liquid flows of an immiscible fluid is modeled in an annular die, where the fiber is dragged at a higher speed. The equations characterizing the flow and heat transfer phenomena are solved exactly and the effects of emerging parameters (Deborah and slip parameters, characteristic velocity, radii ratio and Brinkman numbers on the axial velocity, flow rate, thickness of coated fiber optics, and temperature distribution) are reported in graphs. It is shown that an increase in the non-Newtonian parameters increase the velocity in the absence or presence of slip parameters which coincides with related work. The comparison is done with experimental work by taking λ → 0 (non-Newtonian parameter).
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