Vijayakumar Thulasi, R. Thundil Karuppa Raj^*

Frontiers in Heat and Mass Transfer, Vol.10, pp. 1-9, 2018, DOI:10.5098/hmt.10.33

Abstract Diethyl ether is one of the potential alternative fuels for the high speed compression ignition engines that can replace the existing neat diesel fuel. It is well known that the combustion characteristic of a compression ignition engine is highly influenced by the fuel spray structure formed during the injection process. In this paper the spray structure formation for the diethyl ether fuel is studied numerically, using the discrete phase model and it is compared with the neat diesel fuel. The spray is investigated in a constant volume chamber maintained at 30 bar pressure. The fuel… More >

Katharina Niedermayr¹, Gerhard Pölzl², Sabine Scholl‐Bürgi¹, Christine Fauth³, Ulrich Schweigmann¹, Edda Haberlandt¹, Ursula Albrecht¹, Manuela Zlamy¹, Wolfgang Sperl⁴, Johannes A. Mayr⁴, Daniela Karall¹

Congenital Heart Disease, Vol.13, No.5, pp. 671-677, 2018, DOI:10.1111/chd.12634

Abstract Objective: In general, a mitochondrial disorder is diagnosed on the basis of symptom combinations and confirmed by genetic findings. However, patients carrying the m.3243A>G mutation in the mitochondrial tRNA leucine 1 (MT‐TL1) do not always meet all the proposed criteria for the most frequently encountered mitochondrial syndrome “MELAS,” an acronym for Mitochondrial Encephalomyopathy, Lactic Acidosis, and at least one Stroke‐like episode. We here present various phenotypic characteristics of the mitochondrial mutation m.3243A>G with particular focus on cardiac manifestations.
Methods and Results: We followed nine patients (1 month to 68 years old; median 42 years; four female and five male) from… More >

Natasha G. Boyes¹, Michael K. Stickland², Stephanie Fusnik¹, Elizabeth Hogeweide¹, Josie T.J. Fries¹, Mark J. Haykowsky³, Chantelle L. Baril¹, Shonah Runalls¹, Ashok Kakadekar⁴, Scott Pharis⁴, Charissa Pockett⁴, Timothy J. Bradley⁴, Kristi D. Wright⁵, Marta Erlandson¹, Corey R. Tomczak¹

Congenital Heart Disease, Vol.13, No.4, pp. 578-583, 2018, DOI:10.1111/chd.12614

Abstract Children with congenital heart disease are at risk for developing increased arterial stiffness and this may be modulated by physical activity. Objective: To compare arterial stiffness in high- and low-physically active children with congenital heart disease and healthy age- and sex-matched controls.
Patients: Seventeen children with congenital heart disease (12 ± 2 years; females = 9), grouped by low- and high-physical activity levels from accelerometry step count values, and 20 matched controls (11 ± 3 years; females = 9) were studied.
Outcome Measures: Carotid-radial pulse wave velocity was assessed with applanation tonometry to determine arterial stiffness. Body composition… More >

Li Ding¹, Jiasheng Zhang,^1,2, Hongchang Sun^3,*

CMES-Computer Modeling in Engineering & Sciences, Vol.117, No.2, pp. 213-229, 2018, DOI:10.31614/cmes.2018.03981

Abstract In order to ensure the safety of fluid flow in deep-water submarine pipelines, a safe and energy-saving built-in skin effect electric heat tracing technology was adopted as the thermal management strategy. The magnetic field distribution of built-in skin effect heating system is analyzed based on the mechanism of built-in skin effect heating system, so as to obtain the equivalent circuit model of built-in skin effect electric heating system. Meanwhile, heating power is introduced as an intermediate variable to establish the relationship between power supply frequency and built-in skin effect heating temperature. Aiming at the skin… More >

Haojun Peng^1,*, Ping Zhang²

CMES-Computer Modeling in Engineering & Sciences, Vol.114, No.1, pp. 59-73, 2018, DOI:10.3970/cmes.2018.114.059

Abstract In this paper, a three dimension model is built according to real surface cleaner in airport runway rubber mark cleaning vehicle and numerical simulation of this model is carried out using Ansys Fluent software. After comparison and analysis the flow field between high speed rotating waterjet and static waterjet formerly studied by other researchers, the influences of different standoff distance from nozzle outlet to runway surface and rotation speed on rubber mark cleaning effect is simulated and analyzed. Results show the optimal operation parameters for the simulated model and quantitative advices are given for design, More >

T. Chekifi^1,2,*, B. Dennai², R. Khelfaoui²

FDMP-Fluid Dynamics & Materials Processing, Vol.14, No.3, pp. 201-212, 2018, DOI:10.3970/fdmp.2018.00322

Abstract The fluidic oscillator is an interesting device developed for passive flow measurement. These microsystems can produce a high oscillating jet frequency with high flow velocity. The main advantages of fluidic oscillators are that no moving parts is included in the device. Commercial CFD code FLUENT was used to perform analysis of flows in fluidic oscillator. Numerical simulations were carried out for different flow conditions, where water and air were used as working fluids. The oscillation frequencies were identified by the discrete fast Fourier transform method (FFT). Furthermore a low-pressure vortex of fluid flow in the More >

Muhammad Shoaib Arif¹, Mairaj Bibi², Adnan Jhangir³

CMC-Computers, Materials & Continua, Vol.54, No.2, pp. 181-195, 2018, DOI:10.3970/cmc.2018.054.181

Abstract This communique is opted to study the approximate solution of the Algebraic Lyapunov equation on the manifold of positive-definite Hermitian matrices. We choose the geodesic distance between -AHX - XA and P as the cost function, and put forward the Extended Hamiltonian algorithm (EHA) and Natural gradient algorithm (NGA) for the solution. Finally, several numerical experiments give you an idea about the effectiveness of the proposed algorithms. We also show the comparison between these two algorithms EHA and NGA. Obtained results are provided and analyzed graphically. We also conclude that the extended Hamiltonian algorithm has More >

D. Srinivasacharya^* , Md. Shafeeurrahaman

Frontiers in Heat and Mass Transfer, Vol.8, pp. 1-8, 2017, DOI:10.5098/hmt.8.11

Abstract In this article the laminar mixed convective incompressible electrically conducting flow of a nanofluid in vertical channel has been investigated by considering Hall and Ion-slip parameter effects. The nonlinear governing equations are non-dimensionalized and then solving by using HAM procedure. The impact of the magnetic, Hall and Ion-slip parameter on dimensionless velocity, temperature and nanoparticle concentration are investigated and represented geo-metrically. More >

Díaz-Álvarez EA^1,2, AP Rojas-Cortés^1,2, E de la Barrera¹

Phyton-International Journal of Experimental Botany, Vol.86, pp. 278-281, 2017, DOI:10.32604/phyton.2017.86.278

Abstract The epiphytic bromeliad Tillandsia makoyana was studied to assess the contribution of the environmental factors, water, temperature, and light, to the expression of the Crassulacean acid metabolism. In particular, nocturnal titratable acidity accumulation and maximum leaf temperature were measured in response to watering and incident light. Plants that were watered and exposed to direct sunlight had the highest nocturnal accumulation of titratable acidity (25.52 ± 0.34 H⁺/m²), while those without irrigation and shaded showed a 59% reduction in their titratable acidity. Our results illustrated a rapid response of the photosynthetic activity to water availability in Tillandsia makoyana, a More >

K. Kaladhar^a,∗, D. Srinivasacharya^b

Frontiers in Heat and Mass Transfer, Vol.7, pp. 1-10, 2016, DOI:10.5098/hmt.7.6

Abstract This present investigation carried out the effects of Hall current, Joule heating and the thermal diffusion on mixed convection flow of electrically conducting couple stress fluid in a vertical channel saturated with porous medium. The final system of ordinary differential equations are obtained from the governing non-linear partial differential equations by using the similarity transformations. Homotopy Analysis Method has been used to solve the non-linear system. The average residue errors of the HAM solutions are presented through graphs. The influence of the emerging parameters (Hall, Soret, magnetic and the couple stress parameters) on velocity, temperature More >