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  • Open Access


    Study on Oil Film Model of Electronic Fuel Injection Motorcycle Engine Cylinder

    Shusheng Xiong1, Qiujie Song1, Wei Li2,*, Lian Xie3

    Energy Engineering, Vol.118, No.1, pp. 163-172, 2021, DOI:10.32604/EE.2020.013410

    Abstract Based on the principles of heat transfer, an oil film model in the engine cylinder was established. Under the condition of cold state, the influence of factors such as engine fuel injection, fuel drop point, cylinder inner wall temperature, and inlet fluid on the oil film is comprehensively considered to establish an oil film quality prediction model. Based on the measurement of the compensation oil quantity in the transition conditions, the variation of the oil film during the transition is analyzed. The experimental results show that the velocity of the airflow in the intake port and the temperature and pressure… More >

  • Open Access


    Numerical Treatment of MHD Flow of Casson Nanofluid via Convectively Heated Non-Linear Extending Surface with Viscous Dissipation and Suction/Injection Effects

    Hammad Alotaibi1,*, Saeed Althubiti1, Mohamed R. Eid2,3, K. L. Mahny4

    CMC-Computers, Materials & Continua, Vol.66, No.1, pp. 229-245, 2021, DOI:10.32604/cmc.2020.012234

    Abstract This paper introduces the effect of heat absorption (generation) and suction (injection) on magnetohydrodynamic (MHD) boundary-layer flow of Casson nanofluid (CNF) via a non-linear stretching surface with the viscous dissipation in two dimensions. By utilizing the similarity transformations, the leading PDEs are transformed into a set of ODEs with adequate boundary conditions and then resolved numerically by (4–5)th-order Runge-Kutta Fehlberg procedure based on the shooting technique. Numerical computations are carried out by Maple 15 software. With the support of graphs, the impact of dimensionless control parameters on the nanoparticle concentration profiles, the temperature, and the flow velocity are studied. Other… More >

  • Open Access


    An Improved Differential Fault Analysis on Block Cipher KLEIN-64

    Min Long1, *, Man Kong1, Sai Long1, Xiang Zhang2

    CMC-Computers, Materials & Continua, Vol.65, No.2, pp. 1425-1436, 2020, DOI:10.32604/cmc.2020.011116

    Abstract KLEIN-64 is a lightweight block cipher designed for resource-constrained environment, and it has advantages in software performance and hardware implementation. Recent investigation shows that KLEIN-64 is vulnerable to differential fault attack (DFA). In this paper, an improved DFA is performed to KLEIN-64. It is found that the differential propagation path and the distribution of the S-box can be fully utilized to distinguish the correct and wrong keys when a half-byte fault is injected in the 10th round. By analyzing the difference matrix before the last round of S-box, the location of fault injection can be limited to a small range.… More >

  • Open Access


    A Laboratory Investigation into the Fuel Atomization Process in a Diesel Engine for Different Configurations of the Injector Nozzles and Flow Conditions

    Mikhail G. Shatrov1, Valery I. Malchuk2, Andrey Y. Dunin1,*

    FDMP-Fluid Dynamics & Materials Processing, Vol.16, No.4, pp. 747-760, 2020, DOI:10.32604/fdmp.2020.08991

    Abstract This paper reports a laboratory investigation of the fuel injection process in a diesel engine. The atomization process of the considered fuel (a hydrocarbon liquid) and the ensuing mixing with air is studied experimentally under high-pressure conditions. Different types of injector nozzles are examined, including (two) new configurations, which are compared in terms of performances to a standard injector manufactured by the Bosch company. For the two alternate con- figurations, the intake edges of one atomizing hole (hole No. 1) are located in the sack volume while for the other (hole No. 2) they are located on the locking cone… More >

  • Open Access


    Sub-Surface Drip Irrigation in Associated with H2O2 Improved the Productivity of Maize under Clay-Rich Soil of Adana, Turkey

    Alhan Sariyev1, Celaleddin Barutcular2,*, Mert Acar1, Akbar Hossain3, Ayman EL Sabagh2,4,5,*

    Phyton-International Journal of Experimental Botany, Vol.89, No.3, pp. 519-528, 2020, DOI:10.32604/phyton.2020.09142

    Abstract Maize being sub-tropical crop is sensitive to water deficit during the early growth stages; particularly clay-rich soil, due to the compaction of the soil. It is well-documented that potential sub-surface drip irrigation (SDI) (Full irrigation; SDIFull (100% field capacity (FC)), Deficit irrigation; SDIDeficit (70% FC)) improves water use efficiency, which leads to increased crop productivity; since it has a constraint that SDI excludes soil air around the root-zone during irrigation events, which alter the root function and crop performance. Additionally, in clayrich soils, the root system of plants generally suffers the limitation of oxygen, particularly the temporal hypoxia, and occasionally… More >

  • Open Access


    Influence of Diesel Engine Intake Throttle and Late Post Injection Process on the Rise of Temperature in the Diesel Oxidation Catalyst

    Ke Sun, Da Li, Hao Liu, Shuzhan Bai*

    FDMP-Fluid Dynamics & Materials Processing, Vol.16, No.3, pp. 573-584, 2020, DOI:10.32604/fdmp.2020.09591

    Abstract In order to effectively implement DPF (Diesel Particulate Filters) regeneration control, thermal management of exhaust products before and inside Diesel Oxidation Catalyst (DOC) is necessary. In the present study, the Influence of the intake throttle valve and late post injection process on temperature rise inside DOC is analyzed through engine bench tests. The steady experiment results show that adjustment of the intake throttle valve can effectively increase exhaust temperature before DOC; in particular, with intake throttle valve opening at 20%, temperature before DOC can be increased by about 170°C with respect to the full opening. An increase in the late… More >

  • Open Access


    Inhibition of TGF-β-induced Collagen Production in Rat Achilles Tendons by Injection of Tetramethylpyrazine

    H-L. Wang1

    Molecular & Cellular Biomechanics, Vol.3, No.4, pp. 145-146, 2006, DOI:10.32604/mcb.2006.003.145

    Abstract This article has no abstract. More >

  • Open Access


    Application of a Multiple Well-Injection Approach for CO2 Sequestration in a Saline Reservoir

    Chien-Hao Tseng, Chia-Chen Kuo, Wei-Chih Su, Fang-An Kuo, Keni Zhang, Chuan-Lin Lai

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.17, No.1, pp. 23-24, 2011, DOI:10.3970/icces.2011.017.023

    Abstract The high-performance parallel computing scheme has already been increasingly recognized as an attractive alternative method to resolve the large-scale problems of CO2 sequestration. This paper therefore conducts a parallel computation for simulating multiple well-injection scenarios and long-term CO2 geologic sequestration in a saline aquifer (Figure 1a) based on the ECO2N module of the TOUGH2-MP that is the parallel version of TOUGH2 implemented by the MPI. The numerical performance of TOUGH2-MP is developed on an IBM Cluster 1350 which is composed of 404 nodes and 2 Intel Woodcrest 3.0 Ghz Dual-Core processors per node. Our results indicate that the high-speed parallel… More >

  • Open Access


    Simulation Study of Hydrogen Injection into Graphite

    A. Takayama, S. Saito, A. M. Ito, S. Yonemura, H. Nakamura

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.19, No.3, pp. 83-84, 2011, DOI:10.3970/icces.2011.019.083

    Abstract We have been developing a molecular dynamics (MD) simulation code, a binary collision approximation (BCA) based simulation code, and a BCA-MD hybrid simulation code. In this paper, an overview of the codes is presented. BCA-based simulation results of hydrogen isotopes injection into graphite target are also shown. Detailed description is given as a full abstract. More >

  • Open Access


    Improved material point method for simulating the zona failure response in piezo-assisted intracytoplasmic sperm injection

    Y. Gan, Z. Chen, S. Montgomery-Smith

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.18, No.2, pp. 59-60, 2011, DOI:10.3970/icces.2011.018.059

    Abstract The material point method (MPM), which is an extension from computational fluid dynamics (CFD) to computational solid dynamics (CSD), is improved for the coupled CFD and CSD simulation of the zona failure response in piezo-assisted intracytoplasmic sperm injection (piezo-ICSI). To evaluate the stresses at any zona material point, a plane stress assumption is made in the local tangent plane of the membrane point, and a simple procedure is proposed to find the effective point connectivity for the orientation of the local tangent plane. With an iterative algorithm in each time step, the original MPM is improved to better simulate fluid… More >

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