![Scientific and technical journal of information technologies, mechanics and optics](/images/mag-ntv.png)
TEMPERATURE DEPENDENCE CONSIDERATION ISSUE FOR COEFFICIENT OF VOLUMETRIC HEAT CAPACITY IN SIMULATION OF LASER-ARC PAD WELD PROCESS
![Scientific and technical journal of information technologies, mechanics and optics](/images/mag-ntv.png)
Annotation
The paper deals with research of steels and alloys melting and crystallization on the example of temperature field dynamics simulation for the laser-arc pad weld of composite materials. Mathematical model is one of the Stefan problems for nonlinear transient three-dimensional Fourier equation of heat conduction with boundary conditions. The problem is solved by the finitedifference method with the pass-through calculation scheme. Nonlinearity of the problem is caused by the temperature dependency of the volumetric heat capacity coefficient that has a peak in the interval of phase transition (melting – crystallization). The linear-exponential approximation method is offered to consider this dependence. At some nodes of the discrete mesh the temperature changes from solid phase range to liquid phase at one time step on account of high heat velocity. The algorithm of temperature dependence consideration for volumetric heat capacity peak in the interval of melting – crystallization is suggested based on the nested mesh idea. Though the computational complexity is increased by suggested algorithm it provides more accurate solution and ensures account of phase transition phenomenon. Calculation results for linear and linear-exponential approximation of temperature dependence for volumetric heat capacity are compared. It is shown that in case of linear-exponential approximation the solution process on dynamic adaptive mesh is speeded up due to decreasing of time steps number.
Keywords
Постоянный URL
Articles in current issue
- OPTICAL CONTROL IN THE QUALITY MANAGEMENT SYSTEM OF PISTON RINGS PRODUCTION
OPTICAL SPECTRAL TECHNOLOGIES APPLICATION FOR CONTROL AND DIAGNOSTICS OF BLEACHING WORKS IN THE PULP AND PAPER INDUSTRY
- REMOTE LASER IDENTIFICATION OF THE BUILDING MATERIAL TYPE
- DYNAMIC PARAMETERS OPTIMIZATION FOR TRIGGER TYPE OPTICAL PROBE
- Genomic variants’ analysis of Escherichia coli K-12 cells resistant to phage T7 infection
- Тест
- ANALYSIS OF INTERFEROMETER DATA PROCESSING METHODS IN SPECTRAL OPTICAL COHERENCE TOMOGRAPHY ТОМОГРАФИИ
- RECONSTRUCTION OF DIGITAL FOURIER HOLOGRAM IN CASE OF NYQUIST FREQUENCY EXCESS
- SMALL DISPLACEMENTS DETERMINATION OF OBJECTS SURFACE BY DIGITAL HOLOGRAPHY METHODS
- TERAHERTZ TRANSMISSION AND REFLECTION SPECTRA OF CATARACT MODIFIED HUMAN CRYSTALLINE LENS
- FORMATION OF THE ALGORITHMIC RECURSIVE CORRECTION FOR SYSTEMATIC CODES MULTIPLE ERRORS BASED ON QUASI-SYNDROMES IN THE RATE OF HARDWARE TIME
- PHYSICAL PROCESSES RESEARCH IN THE PULSE XENON LAMP AT THE PUMP ELECTRICAL CIRCUIT OPERATION ON THE BASIS OF MODULATOR WITH THE PARTIAL DISCHARGE CONDENSER
- SYNTHESIS OF OPTIMAL ARTIFICIAL NEURAL NETWORKS BY MODIFIED GENETIC ALGORITHM
- CONTROL SYSTEM IDENTIFICATION AND ADJUSTMENT FOR THE ELECTRO DRIVE OF TELESCOPE AZIMUTHAL AXIS
- PROBLEM-ORIENTED AGENT-BASED PLATFORM OF MULTI MODEL COMPLEXES DESIGN FOR REGIONAL SAFETY MANAGEMENT SUPPORT
- SYSTEMS OF DUPLICATED COMPUTER COMPLEXES WITH REQUESTS REALLOCATION
- DE BRUIJN SEQUENCES APPLICATION FOR PSEUDO REGULAR CODE SCALES GENERATION
- DEVELOPMENT PROBLEMS OF THE ENTERPRISE IT- INFRASTRUCTURE
- KINEMATIC CONTROL OF TWO-PARAMETRICAL SCANNING AERIAL
- QUANTITATIVE DESCRIPTION OF NONLINEAR DYNAMICS IN THE POROUS ACRYLIC THIN FILM
- METHOD OF THE FREE-CONVECTION HEAT EXCHANGE CALCULATION ON SOLID SURFACES IN A WIDE TEMPERATURE RANGE
- MATHEMATICAL ESTIMATION MODELS OF INFORMATION SECURITY SYSTEM INFRASTRUCTURE AT THE ENTERPRISE
- MALWARE DETECTION METHOD BASED ON THE PROGRAM DISTRIBUTION PROCESS ANALYSIS
- PROBABILISTIC ANALYSIS MODEL FOR INFORMATION INFLUENCE
- INFORMATION PROTECTION AGAINST INTENTIONAL ELECTROMAGNETIC INFLUENCES
- INTEGRATED ENGINEERING DESIGN TECHNOLOGIES FOR POLYMERIC COMPOSITE MATERIALS
- PRODUCT SURFACE QUALITY PROVIDING ON ELECTRO-EROSION EQUIPMENT
- MANAGEMENT SCIENTIFIC PRECONDITIONS FOR INTELLECTUAL PROPERTY IN THE PROBLEMS DECISION OF INNOVATIVE DEVELOPMENT OF RUSSIA
- METHODOLOGICAL BASIS OF SUSTAINABILITY AND SUSTAINABLE DEVELOPMENT OF BUSINESS STRUCTURES AS SOCIO-ECONOMIC SYSTEMS
- RISK MANAGEMENT SYSTEM IMPROVEMENT FOR GOODS AND VEHICLES MOVEMENT THROUGH CUSTOMS BORDER OF THE RUSSIAN FEDERATION
- INNOVATION STAGES DISTRIBUTION OF VENTURE CAPITAL INVESTMENTS IN RUSSIA AND THE UNITED STATES
- PROJECT MANAGEMENT MODEL FOR UNIVERSITY MAIN COMPETENCE-ORIENTED EDUCATIONAL PROGRAMS
- TEMPERATURE DEPENDENCE OF REFRACTION INDEX FOR ETHYLENE GLYCOL AND PROPYLENE GLYCOL AQUEOUS SOLUTIONS
- SOFTWARE ARCHITECTURE FOR THE AUTOMATED WORKPLACE OF THE ONBOARD AVIATION EQUIPMENT DEVELOPER
- LIFE CYCLE “DESIGN-MANUFACTURE-OPERATION” REALIZATION FOR ONBOARD EQUIPMENT AT THE AVIATION INDUSTRY ENTERPRISES
- ON THE INFORMATION SECURITY WORKS AGAINST INTENTIONAL ELECTROMAGNETIC INFLUENCES
- CONSOLIDATION OF DIVERSE CHANNELS OF COMPUTER NETWORK
- ESTIMATION OF FUNCTIONAL SAFETY FOR THE DUPLICATED COMPUTING SYSTEMS
- FINANCIAL PLANNING SYSTEMS REVIEW IN THE MARKET OF KAZAKHSTAN
- MUSICAL COMPUTER TECHNOLOGIES IN THE MODERN PROFESSIONAL MUSIC EDUCATION