PrefaceChapter 1: Environmental Transfer Processes Driven by Anthropogenic FactorsK-Epsilon Turbulence Model and Particle Swarm Optimization Technique to Estimate Multiple Atmospheric EmissionsMathematical Modeling in the Dispersion of Contaminants in Urban Waste LandfillsA Numerical Approach to Assess the Urban Heat Island Effect and Thermal Discomfort Supported by the WRF/SLUCM Modeling System: A Case Study of Campos dos Goytacazes/RJ (Brazil)Computational Modeling of Ammonia Dispersion in the Atmosphere in Cases of Accidental Leakage during Road TransportChapter 2: Investigation of Heat Transfer Processes in Engineering SystemsEffect of Microchannel Geometry on Thermal Performance of Microchannel Heatsinks: A CFD StudyThe Utilization of COMSOL MULTIPHYSICS and Exchanger Design Rating Software for Designing and Analyzing of Air CoolerEvaluate Recent Numerical Methods for Long-Term Simulation to Study the Effect of Different Shapes of Thermal Bridges in WallsParticular Aspects Regarding the Radiative Heat Transfer in Thermal Analysis of Steel-Concrete Composite Structural ElementsNumerical Analysis of Phase Change Material Parameters on the Behavior of a Ground-Air Heat ExchangerNumerical Evaluation of the Influence of Different Parameters on the Thermoenergetic Performance of the Earth-Air Heat Exchanger in a Social HousingCahn-Hilliard Equation in Noise Reduction and Concentration-Dependent Heat TransferChapter 3: Numerical and Theoretical Approaches in Solid-State Physics and ChemistryA Numerical Method for Solving the Time Dependent Hartree-Fock Equations of the Helium AtomFirst Principles Study on the Point Defects of Compound FeMnP0.67Si0.33Expressions for Elements of Dynamical Matrix for HCP CrystalsEffect of Surface Layer on Young’s Modulus of Ultrathin Nanofilms: A Theoretical ModelClose Coupled Channels Method: For Hydrogen Atom in Strong Laser Fields