Blar i NTNU Open på forfatter "Holmedal, Lars Erik"
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A rational approach to seepage flow effects on bottom friction beneath random waves
Myrhaug, Dag; Holmedal, Lars Erik; Ong, Muk Chen (Journal article, 2014)The bottom friction beneath random waves is predicted taking into account the effect of seepage flow. This is achieved by using wave friction factors for rough turbulent, smooth turbulent and laminar flow valid for regular ... -
Addendum to "Stokes transport in layers in the water column based on long-term wind statistics": assessment using long-term wave statistics
Myrhaug, Dag; Wang, Hong; Holmedal, Lars Erik (Journal article; Peer reviewed, 2019)This article addresses the Stokes drift in layers in the water column for deep water random waves based on wave statistics in terms of the sea state wave parameters significant wave height and mean zero-crossing wave period. ... -
Analysis of Observed Streaming in Field Measurements
Wang, Hong; Troels, Aagaard; Holmedal, Lars Erik; Myrhaug, Dag (Journal article; Peer reviewed, 2016)Analysis of velocity and suspended sediment concentration data from field measurements at Pearl Beach in New South Wales, Australia, reveals the existence of onshore currents in the close vicinity of the rippled bed, whereas ... -
Cavity flows and wake behind an elliptic cylinder translating above the wall
Zhu, Jianxun (Doctoral theses at NTNU, 2020:312, Doctoral thesis, 2020)Vortex formation is one of the fundamental modes in fluid mechanics and it can develop in almost every realization of fluid motion. Studying its fundamental dynamics and interactions is of great interest for engineering ... -
Characterisation of Near-Inertial Internal Waves in the Deep Hypolimnion of a Large Lake (Lake Geneva)
Monin, Claire (Master thesis, 2022)Water quality in lakes is determined by concentrations in various dissolved substances. Deep lakes in mild climates, such as Lake Geneva, are thermally stratified water bodies, which means they present a vertical structure ... -
Coexistence of natural and forced vortex dislocations in step cylinder flow
Tian, Cai; Zhu, Jianxun; Holmedal, Lars Erik (Journal article; Peer reviewed, 2023) -
Combined tidal and wind driven flows and residual currents
Holmedal, Lars Erik; Wang, Hong (Journal article, 2015)The effect of a residual current on the combined tidal and wind driven flow and the resulting bedload sediment transport in the ocean has been investigated, using a simple one dimensional two-equation turbulence closure ... -
Combined Waves and Tidal Current Flow over a Full Tidal Cycle
Ulstein, Eirik Rådmannsøy (Master thesis, 2019)Målet for dette arbeidet er å kunne forutsi effektene fra kombinert sinusformede overflatebølger og tidevannstrøm over en full tidevannssyklus. En en-dimensjonal turbulensmodell med to likninger har blitt brukt over middels ... -
Constructive Alignment in Science and Engineering: From Principle to Practice
Gynnild, Vidar; Leira, Bernt Johan; Myrhaug, Dag; Holmedal, Lars Erik; Mossige, Jon Coll (Journal article; Peer reviewed, 2019)This paper reports on an action research study on task design and constructive alignment in an optional module at the Norwegian University of Science and Technology. While students appreciated the two professors’ teaching, ... -
Discussion/comments of "Parameterization of nearshore wave breaker index" by Chi Zhang, Yuan Li, Yu Cai, Jian Shi, Jinhai Zheng, Feng Cai and Hong Shuai
Myrhaug, Dag; Wang, Hong; Holmedal, Lars Erik (Peer reviewed; Journal article, 2022)The purpose of these comments and discussion has been to point out that wave statistics can be incorporated in future applications of the nearshore wave breaker index formula proposed by Zhang et al. (2021). This is ... -
Effect of the angle of attack on flow around an elliptic cylinder near a moving wall
Zhu, Jianxun; Holmedal, Lars Erik; Tian, Cai (Journal article; Peer reviewed, 2022)The present work investigates the combined effect of the angle of attack (AOA) (the angle between the semi-major axis of the cylinder and the vertical axis), and the gap ratio G/D (where G represents the distance between ... -
Effect of Wave Skewness and Sediment Particle Size on Sediment Transport Due to Combined Wave-Current Seabed Boundary Layer Streaming
Afzal, Mohammad Saud; Holmedal, Lars Erik; Myrhaug, Dag (Peer reviewed; Journal article, 2022)The effect of wave skewness and sediment particle size on near-bed sediment dynamics and transport owing to wave-induced streaming is examined in this study. Here, wave-dominated flow over a flat rough bed is studied, with ... -
Effects of air-sea drag coefficient on estimating wind stress using wind statistics
Myrhaug, Dag; Wang, Hong; Holmedal, Lars Erik; Leira, Bernt Johan (Peer reviewed; Journal article, 2022)This article addresses the effects of the air-sea drag coefficient on estimation of wind stress based on wind statistics. This is achieved by applying the same wind stress parameterizations chosen by Wrobel-Niedzwiecka et ... -
Effects of an inserted circular cylinder on a steady lid-driven rectangular cavity flow
Zhu, Jianxun; Holmedal, Lars Erik; Myrhaug, Dag (Journal article; Peer reviewed, 2019)This paper provides numerical investigations of flow in a steady lid-driven cavity of depth to width ratio 1/3 containing a circular cylinder. The inner cylinder is treated using a direct-forcing immersed boundary method, ... -
Flow over a single shallow dimple
Zhu, Jianxun; Tian, Cai; Holmedal, Lars Erik (Peer reviewed; Journal article, 2024) -
Flow patterns in a steady lid-driven rectangular cavity with an embedded circular cylinder
Zhu, Jianxun; Holmedal, Lars Erik; Wang, Hong; Myrhaug, Dag (Peer reviewed; Journal article, 2020)A detailed investigation of the flow in a steady lid-driven cavity of depth to width ratio 1:2 containing a circular cylinder is provided. Three different Reynolds numbers (based on the lid velocity and cavity depth) of ... -
Fluid flow in steady and oscillatory lid-driven square cavities
Zhu, Jianxun; Holmedal, Lars Erik; Myrhaug, Dag; Wang, Hong (Peer reviewed; Journal article, 2017)This paper presents numerical simulations of steady and oscillatory lid-driven cavity flow at different Reynolds numbers with a fixed aspect ratio of 1:1. A projection method (P2 pressure correction method) is applied to ... -
From Teaching as Transmission to Constructive Alignment: A Case Study of Learning Design
Gynnild, Vidar; Leira, Bernt Johan; Holmedal, Lars Erik; Myrhaug, Dag; Coll Mossige, Jon (Peer reviewed; Journal article, 2021)This paper reports on an action research study on curriculum design in an optional module at the Norwegian University of Science and Technology. There were two professors teaching their respective parts, henceforth termed ... -
How vortex dynamics affects the structural load in step cylinder flow
Tian, Cai; Zhu, Jianxun; Holmedal, Lars Erik; Andersson, Helge; Jiang, Fengjian; Pettersen, Bjørnar (Journal article; Peer reviewed, 2023)The vortex dynamics and the structural load in a step cylinder (consisting of a small, d, and a large, D, cylinder) flow are investigated numerically at Reynolds number (ReD) 150 for diameter ratios D/d=2.0,2.4 and 2.8. ... -
Near-wall effect on flow around an elliptic cylinder translating above a plane wall
Zhu, Jianxun; Holmedal, Lars Erik; Myrhaug, Dag; Wang, Hong (Peer reviewed; Journal article, 2020)In this work, the flow over an elliptic cylinder near a moving wall is investigated for Reynolds numbers less than 150. Here, the ratio between the gap (i.e., the distance between the cylinder and the wall) and the length ...