This study aims to develop a model that accurately represents the convective drying process of textile materials. The mathematical modeling was developed from energy and mass balances and, for the solution of the mathematical model, the technique of finite differences, in Cartesian coordinates, was used. It transforms the system of partial differential equations into a system of ordinary equations, with the unknowns, the temperature and humidity of both the air and the textile material. The simulation results were compared with experimental data obtained from the literature. In the statistical analysis the Shapiro-Wilk test was used to validate the model and, in all cases simulated, the results were p-values greater than 5 %, indicating normality of the data. The R-squared values were above 0.997 and the ratios Fcalculated/Fsimulated, at the 95 % confidence level, higher than five, indicating that the modeling was predictive in all simulations.

INTRODUÇÃO: Proporções antropométricas e simetria são consideradas determinantes de beleza. Tais parâmetros têm importância significativa em cirurgia plástica facial, notadamente na Rinoplastia. Sendo o nariz o órgão central da face, ele tem especial importância na determinação da simetria facial, tanto através da percepção de um nariz torto quanto através da determinação do crescimento facial. A avaliação da presença de assimetrias faciais tem grande relevância no pré-operatório, tanto para planejamento cirúrgico quanto aconselhamento. OBJETIVO: Avaliar e documentar a presença de assimetria facial em pacientes com plano de Rinoplastia e correlacionar as medidas antropométricas com percepção de assimetria ou simetria facial, avaliando se há uma maior prevalência de assimetria facial entre esses pacientes em comparação com voluntários sem queixa nasal. MÉTODO: trabalho prospectivo, realizado através de comparação de fotografias, em pacientes com Pré-operatório de Rinoplastia e voluntários (controles), n=201, através de controle de medidas antropométricas tomadas de uma linha passando pelo centro da face, até: tragus, canto medial, canto lateral, margem alar, e comissura oral, de cada lado da face, por meio de testes estatísticos (teste Z e Odds ratio). RESULTADOS: Nenhum dos pacientes ou voluntários apresentou valores totalmente simétricos. Subjetivamente, 59% dos pacientes foram percebidos como assimétricos, contra 54%dos voluntários. Objetivamente, mais de 89% dos pesquisados tiveram medidas assimétricas. Os pacientes apresentaram RLMTr (Razão Linha Média Tragus) mais assimétrica que os voluntários, com diferença estatisticamente significativa. DISCUSSÃO/CONCLUSÃO: assimetrias faciais são muito frequentes em pacientes que procuram Rinoplastia, portanto, especial atenção deve ser dada a estes aspectos, tanto para o planejamento cirúrgico, quanto para orientação aos pacientes.

INTRODUCTION: Anthropometric proportions and symmetry are considered determinants of beauty. These parameters have significant importance in facial plastic surgery, particularly in rhinoplasty. As the central organ of the face, the nose is especially important in determining facial symmetry, both through the perception of a crooked nose and through the determination of facial growth. The evaluation of the presence of facial asymmetry has great relevance preoperatively, both for surgical planning and counseling. AIM/OBJECTIVE: To evaluate and document the presence of facial asymmetry in patients during rhinoplasty planning and to correlate the anthropometric measures with the perception of facial symmetry or asymmetry, assessing whether there is a higher prevalence of facial asymmetry in these patients compared to volunteers without nasal complaints. METHODS: This prospective study was performed by comparing photographs of patients with rhinoplasty planning and volunteers (controls), n = 201, and by evaluating of anthropometric measurements taken from a line passing through the center of the face, until tragus, medial canthus, corner side wing margin, and oral commissure of each side, by statistical analysis (Z test and odds ratio). RESULTS: None of the patients or volunteers had completely symmetric values. Subjectively, 59% of patients were perceived as asymmetric, against 54% of volunteers. Objectively, more than 89% of respondents had asymmetrical measures. Patients had greater RLMTr (MidLine Tragus Ratio) asymmetry than volunteers, which was statistically significant. DISCUSSION/CONCLUSION: Facial asymmetries are very common in patients seeking rhinoplasty, and special attention should be paid to these aspects both for surgical planning and for counseling of patients.