Oleg Iliev, Joachim Linn, Mathias Moog, Dariusz Niedziela and Vadimas Starikovicius
This study proposes to develop and investigate different iterative solvers for non‐Newtonian flow equations.
Abstract
Purpose
This study proposes to develop and investigate different iterative solvers for non‐Newtonian flow equations.
Design/methodology/approach
Existing approaches for the time discretization of the flow equation and for an iterative solution of the discrete systems are discussed. Ideas for further development of existing preconditioners are proposed, implemented and investigated numerically.
Findings
A two‐level preconditioning, consisting of a transformation of the original system in the first step and subsequent preconditioning of the transformed system is suggested. The GMRES iterative method, which usually performs well when applied to academic problems, showed dissatisfactory performance for the type of industrial flow simulations investigated in this work. It was found that the BiCGStab method performed best in the tests presented here.
Research limitations/implications
The iterative solvers considered here were investigated only for a certain class of polymer flows. More detailed studies for other non‐Newtonian flows should be carried out.
Originality/value
The work presented in this paper fills a gap related to the usage of efficient iterative methods for non‐Newtonian flow simulations.
Details
Keywords
Rajani Ramdas and Nisha Shankar
This study will help students determine the economic value of a firm particularly in case of a small business. The crux of the case is to help students estimate an enterprise…
Abstract
Learning outcomes
This study will help students determine the economic value of a firm particularly in case of a small business. The crux of the case is to help students estimate an enterprise value for a company and figure the actual worth of the company to aid in decision-making.
Case overview/Synopsis
This case is about a decision dilemma faced by Shashi Hegde, Director, Hycons Renewable Private Ltd, a company ventured into the production of Bio-CNG. It is about a recent proposal received by the firm from APL Ltd for equity investment with 40% stake in the firm. The case reflects the dilemma faced by small businesses to choose between investment or loss of control. Accepting the proposal will bring in additional funds, whereas the Board loss control on the firm. The case revolves around this dilemma. To help Hegde in this task, he seeks advice from his CFO and his confidant Kumar.
Complexity academic level
This case is most appropriate for a core finance class for both under-graduate and graduate programs.
Supplementary materials
Teaching notes are available for educators only.
Subject code
CSS 1: Accounting and Finance.
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Keywords
Shamirah Najjinda, Godfrey Akileng, Vincent Bagire and Peter Turyakira
The purpose of this study is to establish whether all the dimensions of entrepreneurial resources matter in fostering the well-being of women entrepreneurs.
Abstract
Purpose
The purpose of this study is to establish whether all the dimensions of entrepreneurial resources matter in fostering the well-being of women entrepreneurs.
Design/methodology/approach
An explanatory research design was used to collect data through a questionnaire survey of 283 women entrepreneurs who benefited from the Uganda Women Entrepreneurship Programme (UWEP). This study used Statistical Package for Social Sciences to analyze the data.
Findings
Study results show that social and human capital matter unlike financial capital in boosting the well-being of women entrepreneurs.
Originality/value
This study provides maiden empirical evidence on contribution of entrepreneurial resource dimensions in fostering the well-being of women entrepreneurs, unlike extant studies that mostly focused on entrepreneurial resources as a global variable. This was done using evidence from Uganda, a developing context where the government and other stakeholders are still grappling with improving the well-being of women as a pathway for social-economic development.