This work is devoted to the problem of noise and vibration from pipeline systems in multi-storey buildings. A method for determining probability occurrence increased vibrations using modal analysis ANSYS Workbench software package proposed. Numerical straight sections pipeline, each differing diameter length, performed. The results numerical influence diameter, wall thickness a pipe system element on change frequencies its natural oscillations are presented with view predicting risk possible...

The article is devoted to improving the energy efficiency of ventilation in lead production by optimizing air exchange scheme. analysis and assessment interaction supply exhaust with convective stream above tanks are carried out. results numerical calculation scheme its comparing experimental data described. An author distribution refining shop proposed, which takes into account all requirements maintain natural circulation initiated jets from tanks.

The aim of the Journal is to advance research and practice in structural engineering through application computational methods.The will publish original papers educational articles general value field that bridge gap between high-performance construction materials, large-scale systems advanced methods analysis.The scope includes on computer areas engineering, civil materials problems concerned with multiple physical processes interacting at spatial temporal scales.The intended be interest...

Global trends in the innovative technologies' development are systematically entering our lives, introducing sociological and economic changes society. As a result of introduction technologies, human life inevitably changes, cities must respond to these order ensure sustainable The general goal research is identifying urban-planning principles for settlement systems cities, taking into account neo-industrial scenario political development. contains analysis urban strategies, description...

This work is devoted to the problem of noise and vibration from pipeline systems in multi-storey buildings. A method for determining probability occurrence increased vibrations using modal analysis ANSYS Workbench software package proposed. Numerical straight sections pipeline, each differing diameter length, performed. The results numerical influence diameter, wall thickness a pipe system element on change frequencies its natural oscillations are presented with view predicting risk possible...

The article discusses the results of studies dynamic parameters a pipeline connected to pump, carried out in order obtain data full-scale conditions. At this stage study, stationary process pump operation, which forms turbulent flow pipeline, was studied. A computational and experimental technique for studying natural frequencies vibration modes pipelines complex spatial configuration has been developed. adequacy developed methods finite element modeling processes systems frequency range up...

This paper presents the issues of technical state subsurface structures in operation and erection buildings under available development. It is stated that detailed monitoring underground tunnels essential, since structure unique technologically complex. The aspects geotechnical are considered. principles geodesic rings, tension increase tube lining pressure from building construction on ground described. Recommendations for tunnel presented.

The work is devoted to the study of acoustic characteristics reverberation chamber. Sound pressure measurements have been carried out sound field in low and high level rooms To determine diffuse sound, was measured at points uniformly distributed over area chambers four levels height. time studied using method interrupted noise fixing decay curve by measuring instrument. establish characteristic correlation between distance source, Pearson coefficient calculated. degree influence finishing...

The authors carried out the numerical analysis of vibration impact subway on multistory residential building. Supposed building site is situated in Yekaterinburg and placed above line tunnels middle track between stations. aimed to simulate initiation during period when train passes, assess availability vibration-damping layer this process, also obtain values vibrational accelerations order predict levels volumes sound reference points living spaces.

Abstract Air pollution as a result of lead evaporation from the surface melts is considered. Conditions for aerosol diffusion by convective and circulation flows are given. The method analogy between processes heat mass transfer was used calculation evaporation. A program set developed new data were obtained on amount transferring into air open surfaces during transportation in ladles with considering cooling.

This article is devoted to solving the problem of noise and vibration in complex pipelines hydromechanical systems. In study, first ten frequencies natural oscillations are calculated for sections pipeline system filled with water outer diameters 60, 70, 102 mm various thicknesses wall. It determined that all investigated diameters, a decrease modes vibrations an increase thickness wall characteristic. Thus, assumption confirmed rigidity reduces likelihood pipeline. concluded straight up...

The article considers vibration resistance of hydromechanical system pipelines characterizing the reliability their operation. As a rule, vibrations and noise in are caused by pressure pulsations flow working medium structural from superchargers propagating along pipeline structure. An experimental analysis vibroacoustic parameters real complex with supercharger was performed to study its dynamic behavior. At this stage study, stationary process pump operation forming turbulent pipeline,...

The article deals with the problem of emergence noise and vibration from pipelines multi-storey residential buildings. determination method risk increased using modal analysis in ANSYS Workbench software packages is offered. numerical straight pipeline sections various geometrical parameters carried out. Risk predictions possible resonant modes are made. maximum allowed span lengths between supports for systems a diameter 15, 20, 25, 32, 40, 48, 60, 70, 102, 114, 140, 168, 180, 219 mm

The article is devoted to issues related the occurrence of noise and vibration in centrifugal turbine ventilation equipment residential buildings. Airflow rotating radial-axial channel representing a simplified configuration interblade studied. Numerical simulation airflow considered geometrical domain performed using ANSYS CFX solver. A particular attention given different turbulence closures used model. Accuracy results was estimated with respect laboratory measurements by J. Moore [9]....