Boiling flows

In order to investigate the coolability of tight rod bundle with wire spacer, the study on CHF behavior was conducted by means of experiment for boiling two-phase flow in three-pin tight rod bundle with and without wire spacer. The effect of wire spacer and pitch to diameter ratio on CHF were considered.

8p vicedric 08-02-2023 4 3   Download

INSCSP-R7 Standard Problem based on ENTEK BM Test Facility is investigated by RELAP5 code for prediction of averaged cross-section void fraction in vertical boiling channel of 7 m height.

10p vidumbledore 06-01-2023 16 4   Download

This paper presents a new one-dimensional solver for two-phase flow simulations where boiling is involved. The solver has been implemented within the OpenFOAM® platform. The basic formulation follows the Eulerian description of the Navier–Stokes equations.

16p vironald 15-12-2022 9 4   Download

The potential use of many common hydrofluorocarbons and hydrocarbons as well as new hydrofluoroolefins, i.e. R1234yf and R1234ze(E) working fluids for a combined organic Rankine cycle and vapor compression refrigeration (ORC-VCR) system activated by low-grade thermal energy is evaluated. The basic ORC operates between 80 and 40 C typical for low-grade thermal energy power plants while the basic VCR cycle operates between 5 and 40 C.

10p kequaidan1 16-11-2019 12 0   Download

In this study, the moving particle semi-implicit method-meshless advection using flow-directional local grid method is used to simulate the bubble growth, departure, and sliding on the downward-facing heating surface in pure water and nanofluid (1.0 vol.% Al2O3/H2O) flow boiling processes; additionally, the bubble critical departure angle and sliding characteristics and their influence are also investigated.

10p minhxaminhyeu5 30-06-2019 14 3   Download

In the thermal-hydraulic system codes, such as MARS and RELAP5/MOD3, the Savannah River Laboratory (SRL) model has been adopted as a subcooled boiling model. It, however, has been shown that the SRL model cannot take into account appropriately the effects of inlet liquid velocity and hydraulic diameter on axial void fraction development.

10p minhxaminhyeu3 12-06-2019 14 0   Download

The second capability can be applied to find originally unassociated means to achieve a goal. This is vital in a situation where all designed means have failed. A technique of procedure synthesis can be used to express identified alternatives as a series of operations. A case of station blackout occurring at the boiling water reactor is described. An MFM model of a boiling water reactor is built according to the analysis of goals and functions.

11p minhxaminhyeu3 25-06-2019 17 0   Download

(bq) part 2 book "fundamentals of heat and mass transfer" has contents: internal flow, free convection, boiling and condensation, heat exchangers, radiation - processes and properties, radiation exchange between surfaces, diffusion mass transfer.

534p bautroibinhyen19 24-02-2017 85 8   Download

(bq) part 2 book "fundementals of heat and mass transfer kotandaraman" has contents: convective heat transfer—practical correlations—flow over surfaces, forced convection, natural convection, phase change processes—boiling, condensation freezing and melting, heat exchangers, thermal radia tion, mass transfer.

379p bautroibinhyen19 24-02-2017 45 5   Download

Gas–liquid multiphase flows play an essential role in the workings of Nature and the enterprises of mankind. Our everyday encounter with liquids is nearly always at a free surface, such as when drinking, washing, rinsing, and cooking. Similarly, such flows are in abundance in industrial applications: heat transfer by boiling is the preferred mode in both conventional and nuclear power plants, and bubbledriven circulation systems are used in metal processing operations such as steel making, ladle metallurgy, and the secondary refining of aluminum and copper.

337p bachduong1311 12-12-2012 60 7   Download

In the wake of energy crisis due to rapid growth of industries, urbanization, transportation, and human habit, the efficient transfer of heat could play a vital role in energy saving. Industries, household requirements, offices, transportation are all dependent on heat exchanging equipment. Considering these, the present book has incorporated different sections related to general aspects of heat transfer phenomena, convective heat transfer mode, boiling and condensation, heat transfer to two phase flow and heat transfer augmentation by different means....

538p kimngan_1 05-11-2012 71 6   Download

This book presents a comprehensive review of studies in nuclear reactors technology from authors across the globe.

350p cucdai_1 16-10-2012 89 15   Download

Preface Nomenclature CHAPTER 1. PHASE CHANGE, NUCLEATION, AND CAVITATION 1.1 Introduction 1.2 The Liquid State 1.3 Fluidity and Elasticity 1.4 Illustration of Tensile Strength 1.5 Cavitation and Boiling 1.6 Types of Nucleation 1.7 Homogeneous Nucleation Theory 1.8 Comparison with Experiments 1.9 Experiments on Tensile Strength 1.10 Heterogeneous Nucleation 1.11 Nucleation Site Populations 1.12 Effect of Contaminant Gas 1.13 Nucleation in Flowing Liquids 1.14 Viscous Effects in Cavitation Inception 1.15 Cavitation Inception Measurements 1.16 Cavitation Inception Data 1.17 Scaling of...

254p khangoc2391 11-08-2012 65 7   Download

The theoretical analysis and modeling of heat and mass transfer rates produced in evaporation and condensation processes are significant issues in a design of wide range of industrial processes and devices. This book introduces advanced processes and modeling of evaporation, boiling, water vapor condensation, cooling, heat transfer, heat exchanger, fluid dynamic simulations, fluid flow, and gas flow to the international community.

0p ktcn_1 10-07-2012 80 19   Download