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Numerical simulation of vortex-induced drag of elastic swimmer models

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Paper breakdownThe authors' claims, conditions and measurements, as JSON Signed receiptProof this review has not been altered
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T. Engels, D. Kolomenskiy, K. Schneider, J. Sesterhenn

Fluid Dynamics · Submitted 20 Mar 2018

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim We find the cruising velocity of the contracting swimmer to be higher than the rectangular one, which in turn is higher than the expanding one.

how it is stated · asserted 1.00 read the record →

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arXiv ID1803.07316 (version 1)
Pith IDN5INQWLV, Pith's permanent record of this paper and its review
CitationD. Kolomenskiy, J. Sesterhenn, K. Schneider, T. Engels. "Numerical simulation of vortex-induced drag of elastic swimmer models." arXiv:1803.07316 (2018). https://pith.science/paper/N5INQWLV
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The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

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Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 5,399 input tokens.

What the abstract itself states, as probabilities: claims first 0.04 · states limitation 0.12 · human participants 0.01 · controlled comparison 0.64 · randomized assignment 0.01 · states quantitative result 0.09 · compares with prior results 0.95 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; .

We present numerical simulations of simplified models for swimming organisms or robots, using chordwise flexible elastic plates. We focus on the tip vortices originating from three-dimensional effects due to the finite span of the plate. These effects play an important role when predicting the swimmer's cruising velocity, since they contribute significantly to the drag force. First we simulate swimmers with rectangular plates of different aspect ratio and compare the results with a recent experimental study. Then we consider plates with expanding and contracting shapes. We find the cruising velocity of the contracting swimmer to be higher than the rectangular one, which in turn is higher than the expanding one. We provide some evidence that this result is due to the tip vortices interacting differently with the swimmer.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 We present numerical simulations of simplified models for swimming organisms or robots, using chordwise flexible elastic plates. contribution 0.81 0.96 0.03 asserted 0.99
s1 We focus on the tip vortices originating from three-dimensional effects due to the finite span of the plate. contribution 0.87 0.61 0.03 asserted 0.90
s2 These effects play an important role when predicting the swimmer's cruising velocity, since they contribute significantly to the drag force. background 0.89 0.19 0.09 asserted 0.99
s3 First we simulate swimmers with rectangular plates of different aspect ratio and compare the results with a recent experimental study. method 0.79 0.93 0.03 asserted 0.95
s4 Then we consider plates with expanding and contracting shapes. method 0.56 0.83 0.02 asserted 0.67
s5 We find the cruising velocity of the contracting swimmer to be higher than the rectangular one, which in turn is higher than the expanding one. result 1.00 0.97 0.58 asserted 1.00
s6 We provide some evidence that this result is due to the tip vortices interacting differently with the swimmer. interpretation 1.00 0.91 0.30 hedged possibility 0.94

What kind of paper the classifier reports this is: simulation study 1.00 · evidence from simulation or computation 1.00.

What was examined, and what was not

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not examined
  • full text
  • figures and tables
  • references and citing sentences
  • relations to other papers
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  • P abstract
not run
  • S sections
  • T body sentences
  • C citations
  • R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper
Original abstract

We present numerical simulations of simplified models for swimming organisms or robots, using chordwise flexible elastic plates. We focus on the tip vortices originating from three-dimensional effects due to the finite span of the plate. These effects play an important role when predicting the swimmer's cruising velocity, since they contribute significantly to the drag force. First we simulate swimmers with rectangular plates of different aspect ratio and compare the results with a recent experimental study. Then we consider plates with expanding and contracting shapes. We find the cruising velocity of the contracting swimmer to be higher than the rectangular one, which in turn is higher than the expanding one. We provide some evidence that this result is due to the tip vortices interacting differently with the swimmer.

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